The Credit Card PQM bonuses post in the Airline Activity section (since it is PQMs)
they are labeled (depending on the bonus available for the card)
Chase $35K Spend PQM Bonus
and
Chase PQM Bonus On United.Com Spend
with the award miles being 0
The $35K Spend bonus posts with the billing statement in which the threshold is met. And is noted on the Chase statement.
The United.Com Spend bonus tends to post with the statement that month after the spend was reported (but post dated to the previous month). There is not notation on the Chase statement.