How can I get a guy to subtly STOP talking about the same thing and bragging?

This older man online who I’m texting is just going on and on about his interest. I’m a nice person so I’m not gonna tell him that. But I really hope there’s more going on there and the friendship isn’t just gonna end up being him taking about his hobby and bragging too.

How can I get a guy to subtly STOP talking about the same thing and bragging?
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