It gave him more through suggesting that he must somehow make up to himself for not being sure he was sufficiently disagreeable.

That had really been present to him as his only way to be sure he was sufficiently thorough.

The point was that if Chad's tolerance of his thoroughness were insincere, were but the best of devices for gaining time, it none the less did treat everything as tacitly concluded.
That seemed at the end of ten days the upshot of the abundant, the recurrent talk through which Strether poured into him all it concerned him to know, put him in full possession of facts and figures.

Never cutting these colloquies short by a minute, Chad behaved, looked and spoke as if he were rather heavily, perhaps even a trifle gloomily, but none the less fundamentally and comfortably free.

He made no crude profession of eagerness to yield, but he asked the most intelligent questions, probed, at moments, abruptly, even deeper than his friend's layer of information, justified by these touches the native estimate of his latent stuff, and had in every way the air of trying to live, reflectively, into the square bright picture.