Just landed in CMH (flight 334 from ORD). We rolled up to the gate about 2:45 late (MX delay in ORD), and started sitting.
After 10 minutes, the captain came on the PAand explained that we we couldn't do anything until we got a ramp crew, and that the ramp crew was ignoring us. He also said, "In 28 years, I have never -- ever -- seen anything like this."
And now, after 23 minutes, we just pulled up to the gate.
So... how long have you been ignored by a ramp crew?
About 20 minutes in SFO from DEN. The captain told us that this was a new thing at UA. I.e., another change you will like. That flight, like yours, was a three digit number, ergo an sUA crew in both cases who are not used to the CO way.