"Request we do this in Overlap. Pidgin if needed."

Patik makes a sound that translates just fine, a longsuffering groan and throwing their hands up. "Fiiiiiine. Later though." They make a couple of clicks, clearing their throat, and then starts in the main language the two of them know best. This one has a vastly less specialized and opinionated vocabulary, though it's maybe a little terse. It does in fact have a word for "sandwich."

"You ran into a long animal with some kind of symmetric or aesthetic face. It knocked you out and you woke up here? Are you hurt?"

"Repetition?" she requests, in Overlap.

Patik makes a fast, sweeping gesture with one hand that looks vaguely like a conductor signaling the end of a symphony, then speeds up to get several paces ahead. Deptka steps forward into their place.

"Question: Are you injured?"

"Question: What is your handle*?"

"Question: What day is it?"

"Question: Where are you?

*A word that clearly isn't synonymous with name, but is basically what you want people to call you.

"No; Zarian; the fifth of - "

"You keep time differently."

"You keep time much differently.  Than I.  ...Do."

"There's lots of ways to keep time!"

"Statement: You speak Overlap. Overlap time is kept the same."

Overlap as a language is very different from nomic-lingua-quarta. It's full of rapid starts and stops and hard consonants. The verbal language is accompanied by hand gestures, paired in a way where you could actually mostly understand a sentence from either the verbal or the signed. Deptka is also using it tersely, saying as few words as they can while Patik is doing something with syllable count that's more expressive, somewhat like a haiku. 

"Statement: If an animal brought you here, you would be injured."

"Statement:  You years seem to muchly more long than I know!"  This is exciting enough that she doesn't feel like slowing down to get the grammar; the hand gestures she'll throw in insofar as they come conveniently attached with the concepts in Deptka's brain and don't require extra attention from her.  ...But maybe that was overboard.  "Your years seem to muchly more long than those I know."  She switches from walking to skipping.  "Question:  How do you mean, 'You speak Overlap'?  I did not already!"

"Statement: everyone* who speaks Overlap is expected to use the same calendar in Overlap."

Question: where did you learn Overlap?" 

*A word where the literal meaning is what "everyone" colloquially means in English. It isn't wrong to say that everyone has two eyes in Overlap, there's a different word for when you do actually include the tails of the distribution. 

Patik makes some kind of excited, fluttering hand gestures that actually have the Overlap meaning "wait wait I want to solve this puzzle" while making vocalizations that are the barest gesture at those words, consisting of some staticy squeaking. 

Zarian doesn't catch much of that since she's been prioritizing the spoken portion and everything's going so fast.  "Statement:  I learn it now by milening from you two!"

"Statement: You're using words we haven't yet, like milening."

"Relax Deptka, maybe they don't want to talk about it or they have superpowers or they're telling stories." 

- That's very confusing.  That's confusing enough to check these people's - they don't have it??  At all????

"I am superpower milening."

(Also what's the connotations of including or excluding the introductory 'Statement:' and 'Question:'s; so far she's non-citrelièvously figured out that it's not grammatically necessary, and she thinks she's more like Patik than like Deptka so she leaves it off here, but she should really actually check.)

"See, they're just using a superpower."

"Wait."

"If you truly have superpowers* that would be cool. I'd like to invite you to show off?!?"

*The core use of "superpower" here is something like "magic trick" with a stage magician, but for more fields. A possible idiom among subcultures might call it a "fingersnap" except more repeatable. 

"Statement: I've observed two languages, neither one private."

So, the statement and question thing. 

Overlap has a marker for the type of sentence. It's a short prefix to the first word. Not using it makes the sentence incorrect, but it's incorrect the way a sentence without a subject or object is incorrect. "I'm getting a drink. You want?" or "Going to the store." are both incorrect, but understandable. The ambiguity is there, and the listener just has to figure it out from context. 

Deptka is also using a somewhat more constrained set of words with less gesture and emotive expression in their voice, but it's mostly that they're using all the parts of a sentence that are required to be there. 

That sounds like an invitation to check whether any of Patik's languages are private.

Patik speaks somewhere between three and ten languages.

Three are complex, they're used to using them with lots of people, they're fluent and comfortable with them. Overlap, Nomic Lingua Duos, and Aeyeia. 

Five of the others are dialects of each other. For instance, Patik knows some Nomic Lingua Tri and Nomic Lingua Quarta, where they have substantial changes but the basic roots and vocabulary are the similar. It's a bit less than the difference between Spanish to Portuguese, a bit more than the difference between Python and Python 3. Overlap forms the base for several languages that layer a lot of extra jargon on top and add a lot more phonemes and cheremes; in particular, they drop a rule Overlap has that a sign must be able to be made with one hand. 

Two are private. The vocabulary has large chunks of unexplored space; not the way Nomic Lingua tends to have gaps as a kind of aesthetic or joke where they commit to the bit, but the way a hobbiest conlang has gaps because the author hasn't come up with anything. One of those Deptka doesn't know, it's conveyed with light strokes along the other person's arm and low crooning, and the contents are largely about food and noise and reassurance. One of those is shared with Deptka, is entirely signed, and the vocabulary is a bit more built out but the grammar is almost nonexistant; the use has a lot of noun-verb pairings and not much else. "Apple eat." " Couch-end hold." "Find book." "Hold me."