They blink. 

They heard that, despite no hand on a weapon involved in the conversation - 

Testing: 'Can you hear me like this?'

Yes! Hi!

"Interesting. In the usual course of things, a wielder can only participate in such a conversation if they have their hand on a weapon, unless they have synced heavily..."

Talking to both of you seems the same to me...

They exchange a look with Lianne. "Fascinating. I wonder if we feel the same upon touching?"

Let's find out?

They'll walk up and touch the staff, then.

You seem like the same person over again. Is that weird? It seems weird.

"We had an interesting interaction when syncing - Lianne had been a weapon, and we'd been getting closer as we learned to work together. And then our memories spilled past the barrier, and I stopped being able to wield them. I suppose the adage 'a weapon cannot wield themselves' applies even here."

I have no idea what any of that means, but let me know if I can help!

"Typically as weapon and wielder grow to know one another, they develop synergistic powers. Usually this requires some level of personal compatibility. Our powers involved mental coordination and telepathy, which appears to have then gone too far. Weapons require wielders to use the majority of their abilities, such as shapeshifting and attacks. I was being sarcastic, in referring to us as the same person, and therefore incapable of wielding ourselves."

I meant about, like, implications, but okay.

"Ah. I apologize. The implication mostly seems to have been an unusual interaction that seems unlikely to repeat. Perhaps also that Lianne and I will be able to wield you equally well, assuming you sync with us."

I suppose. (Skepticism.) We were gonna do something?

"I apologize. You'd wanted to practice sparring? Would you rather be wielded by Lianne or I?"

Lianne, the staff says hastily.

One might get the impression that Marian did not make a good impression, even if they are in some weird magic sense the same person.

"Alright. I'm fine with that. Staff versus staff sound good to you?"

Sure.

What kind of attacks will we be meeting in a real fight?

"It varies, a lot. Most monsters have short ranged attacks analogous to claws, teeth, or spiny tails. Some have weapons. A few even have ranged attacks."

Don't think I can do much about ranged attacks.

"Most weapons get a variety of magical powers - as a sword I managed projection abilities, attacking along the swing of my blade. Some ranged weapons get better at melee. But it is harder without magic."

I'll do my best!

"Now a good time to start, then?"

They nod to Marian, who goes to get a (nonmagical) staff.

The wordless concept that moving is always better than sitting still.

Then they'll start, slowly at first then speeding up - Lianne's body's less thoroughly trained, but they know each other, still have the same thoughts on attacks, and without magic it's an incredibly close match.