I've never admitted to not having listened when I have missed a call on a mandatory frequency.
Ah, so it's more the fact they
said that they were talking to the ground crew rather than the fact they were?
I've certainly never filed a voyage report on the basis of not having listened to a call I did not hear.
I don't think this crew were going to file on that basis either. The pushback manoeuvre was stopped due to conflicting traffic, that's the basis for the report.
How about you, Gonzo?
How about me, what? Have I missed a call? How would I know? I don't think I have. However, I have frequently
ignored calls from aircraft (and co-ordination attempts from other ATCOs) intentionally because I was dealing with something else that, at that time, was a priority.
Much like, one might think, a ground crew telling flight crew that they were stopping the pushback because of traffic going behind. That might take priority over listening to Ground.
And what's your definition of a 'mandatory frequency'?