BU/ISU Game 1/31 - Baseline inbounds throw hits backboard

[AE Braves Fan]

In the game yesterday between Bradley and Illinois State, a player inbounded the ball and it appeared to strike the bottom of the backboard before being touched by a player who was standing inbounds. What should the ruling have been?

Is this rule different for boys high school, men's NCAA, or NBA?

The ruling during the game was that this was a legal pass and play was not interrupted. Upon further explanation, the official said that the ball contacted the rim, not the backboard. After watching the play several times, the ball did not contact the rim, but in fact hit the backboard - either the couple inches of glass (padding?) that make up the very bottom or maybe the lower rear corner of the bottom of the backboard.