Ending an exchange

What ends an exchange?
Is it the giving and receiving?
Is it feelings of gratitude?
Is it communion?
Communion is beyond exchange.
It's taking things into the outward expression of Thanks
And showing appreciation.

Exchange

Giving and receiving ...
Giving my attention to what's being received (given)
Noticing that
Deciding to continue
Receiving
Processing
Reciprocating

Attention is amazing!

Is it not?
Watching it being given or received is fascinating.
Giving and receiving high-quality attention feels wonderful, doesn't it?
Do you pay attention?
At what cost?
Is it worth it?
What's better as a result?