Anyway, the bottom line is the novel doesn't explicitly state that he knew Jane called on the Bingley sisters.
And, if he didn't know that (which, I grant, is at least as speculative as that he
did know that), he'd have nothing, or at least less, to dissuade him from his belief that Jane was indifferent.
I would note, though, regarding the main question on this thread, Darcy's state of mind, that, while he may have consciously been doing his level best to be impartial, he's gotta be subconsciously trying to sell himself a bill of goods. He knows that his friendship with Bingley will make it likely that he'll cross paths with Lizzy at least occasionally if Bingley's married to Jane, and he's scared spitless over being in love with Lizzy (which, at this point, he hasn't even admitted to himself) of what might come of those meetings
Criminy, his growing feelings for Lizzy were the main reason he got outta Dodge the day after Bingley. It's got to've had some influence over his belief that Jane was not in love with his friend.
JIM
