In the glossary, under Warder:
"...The bonding does not tell her how far he is, though, nor in what direction..."
it's not presnted as one of those "everyone thinks that..." like some glossary entries, so there's an inconsistency somewhere.
Also, the quote from tSR about thom and domon was "Thom's cloak made Domon's eyebrows rise" in my edition (p. 653). Thom made quite an impression on domon when they rode, and they talked quite a bit on the boat, and it's a bit of a coincidence that neither of them recognize each other when most other characters make connections within seconds.