Great question — answering as the UphillTech team:
Here are my thoughts... For scenario(s): A torso catch is quite common. The problem is catching and not getting whistled for a moving violation. A torso bobble and catch is also common. There is no violation as long as control is not established while moving. A player can bobble catch and take two steps with a violation. Unintentional leg/foot contact is allowed. You can literally hit the knee of a defensive player and score a basket, as long as the defender did not intentionally use the knee (trying to block a bounce pass).
Full answer by BREEZ: https://sports.stackexchange.com/a/28989 (CC BY-SA 4.0).
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