Feeling out the extent of Zymandis' presence seems like the first order of business. We don't know about their numbers here, much less the level of organization that's gone into their scheme. Not to mention, it's entirely different from their approach in the last world we were dispatched to.

[And since he gets back to this after Urahara has responded to the discussion, he feels a bit more comfortable voicing his own suspicion. It's more difficult to lend credence to a theory when it's just that.

But now, he sees someone else suspects — and may have long suspected — the same thing]

It's entirely possible there's a reason for that inconsistency, though I hope it's not the case.