Unukalhai and his Master [3.5 Triad Spoilers]

[Hinoto-no-Ryuji]

A different question from the other one; I didn't want to hijack. Anyways.

I'm pretty sure I get Elidibus' game here - he's inserting Unulkalhai into the Scions, having sent the kid on the notion that "The Source is in peril!" (while presumably, and conveniently, leaving Zodiark out of the whole thing). That makes sense; it's crafty and underhanded and juuuust ambiguously antagonistic enough to be something he'd do.

But then, right before he's heartily welcomed into the Scions with open arms, Unulkalhai just casually (or as casually as is possible, given the situation) lets it drop that "the Ascian Elidibus" is this master of his.

Now, we know Elidibus. We know him by NAME, and even if we didn't, Unulkalhai outright says that he's an Ascian. Shouldn't this have...I dunno, given us pause? It's completely ignored by everybody present! Even if some weren't aware of Elidibus - Y'Shtola (possible), Krile (believable) - Urianger DEFINITELY knows him, and obviously we do as well.

Did I miss something? Is Elidibus suddenly not a concern of ours, to the point where we'll welcome an actual disciple of his into our midst without discussion or commentary or even reaction? Did Unukalhai disavow his master at some point and I've just forgotten? Is this just an oversight by the writers, who assumed that we'd fill in certain blanks on our own? What's going on here?