from mid sept to end of nov i was contacted by T&T every single week which made no sense as many of those flights i was sat next to or across the aisle from my parents who were not contacted in every instance that i was.
but now i just presume that every time i step foot on a plane i will be contacted approx 7-8 days later because thats what has been happening to me.
as for a cabin crew being afflicted leading to slow service, you must confuse covid for a different ailment, entirely treatable:
Mega Club Europe cabins