Teenagers waiting to get their covid jabs

The transcript captures a brief exchange where the speaker reflects on a thought and acknowledges understanding.

What do you think the speaker is wondering about?

How does the tone of the conversation reflect the relationship between the speakers?

In what context do you think the phrase 'I just wondered.' might be used?

Why do you think the second speaker acknowledges the first speaker's thoughts?

What emotions do you think are conveyed in the phrase 'Yeah, I know, I know.'?