Nope; banging was officially announced in the press conference of the search and rescue team.

Though they could not confirm that it was really the sub (they probably thought that it was, but they can't officially say it).

I think your sarcasm detector has developed a fault.

Yeah, I was just too focused into the event to think properly... and even the sounds were apparently not it anyway.

compared to the little coverage of the vessel carrying hundreds of migrants which capsized and sank in the mediterranean, and, by factor of sitting, watching, and waiting without intervening, were killed by the eu and greek coast guard