You have to have 3 things to have Goaltending.
- Ball must be completely above the rim.
- Ball must be on its downward flight.
- Ball must have a chance to go in.
If any of these things are not present, then you do not have a violation.
It is possible that one of these things was not present and the officials passed on the play. The backboard or the ball touching the backboard has nothing to do with this call the high school level. Only at the college level is the backboard a factor.
Peace