I want to know what made the head ref wave the flag at the red alliance? It seems to be that the human player is holding the balls in their hand.
Looks like to me either a H9 or H10 violation.
Probably H10. You can notice the head ref immediately run over and talk to the human player after the foul is called.
H10 100%. Unfortunately I didn’t see these calls enough today. Not enough foul calls for not putting balls in the field when things were full. In 148 matches there was routinely >5 balls in the buckets that collect the balls from the ports, after the 15 ball racks were full. In one match I counted 16 just sitting in the bucket (the 15 ball rack was full), the human players not doing anything about it, and no fouls being called.