The doorway glows brighter and then, about ten seconds later, the interior flashes white and then reverts to show, instead of the darkened interior of the cottage, a stone room lit by an unsupported clear globe of white light, and a man in nondescript brown robes (most definitely not Leareth) beckoning to Tadri.
Tadri hesitates.
The man says something in a language that isn't Valdemaran.
Tadri's vision bobs as he nods, and then he glances back at his horse, drops the reins, unhooks and hefts his saddlebags, and walks toward the doorway.
There's an indefinable boundary there, like a soap-bubble. The instant Tadri steps into it, the earcuff loses its connection with him.