What examples are given in both chapters that nick is a good listener?

One example would be the opening line oof the novel.

In my younger and more vulnerable years my father gave me some advice that I’ve been turning over in my mind ever since.

“Whenever you feel like criticizing any one,” he told me, “just remember that all the people in this world haven’t had the advantages that you’ve had.”

Another example would be found in the fact that Nick is generally found to be sitting back taking everything in. He is often an observer, rather than a participant.

She hinted in a murmur that the surname of the balancing girl was Baker. (I’ve heard it said that Daisy’s murmur was only to make people lean toward her; an irrelevant criticism that made it no less charming.) (Chapter 1)