I don't think they were talking about rules difference...but style differences.
The biggest difference they need to adjust to is the type of calls that are being made or not made. It's quite apparent that the FIBA officials of that game were very willing to call a charge whenever the defender held their ground...and sometimes when they flopped...even when close to the basket. The NBA players are used to that not being called. As a result, they go for the block instead of holding their ground. That got them called for several fouls. It seems aggressive shot blocking is almost assumed to be a foul where US often often let a moderate amount of contact go if they get the ball.
They also would drive aggressively into the defense expecting to get a defensive foul call that never came. Sometimes correctly, sometimes not. If it involved body contact, it was often ignored. If it involved any arm contact, it was often called. The
PR players seemed to know that and the US players didn't and never seemed to get it.
I was also watching the US vs New Zealand Women's game where 3 US players simultaneously blocked a shot. In live action it appeared clean and replay also confirmed that no one even came close to making contact....anywhere. The shooter fell down. A foul was called.
