Just thought I'd share something I saw at the German Open qualies last week:
During the second qualifications day, the last men's singles match of the day was Yan An against Gustavo Tsuboi. The match was played on a table that was on the far side of the hall from where the seats were located. Yan An led 3-1, but Tsuboi was making a comeback. In fact, he won the 6th game rather easily.
I don't remember who Yan An's coach was for this match, but like any coach he was talking to Yan An in the break before the 7th game. during this break, Qin Zhijian stood up from the seats where he was sitting among all the spectators and started walking across the hall towards the far table with his phone pressed against his ear, and seemed to talk over the phone. He reached the corner of Yan An's table, and visibly said something in his direction. After that he took a right turn and kept walking with the phone by his ear until he reached the wall. Then he put the phone in his pocket and walked back the way he came to the seats.
Impossible to know for sure what happened there and it's a pretty minor thing anyway nowadays that coaching is allowed between points, but still looked kinda weird.