It feels bad when you put in time and thought without any response. That’s not their fault. It isn’t your fault. Something didn’t jive and that was a miss for both of you.

There is no expectation. Just like you don’t have to respond to me here. Actually, I take that back. The expectation is that they (and you) will only engage their own (or your own) terms. Neither of you owes the other anything.

What would I do? I would take no response as a hint and back off entirely. Matching carries absolutely no obligation to respond to me.