First game, first questions

[Sleeper]

First game last night, first questions today:

First question: During free throws, the players from both teams had their arms extended into the lane to gain position. Arms were still, so I didn't call a violation. I started second guessing myself last night after the game. Was the no-call correct?

Second question: Two post players were getting pretty physical under the basket on both ends, while each team was running the offense. B had hold of A's arm and A was doing the "Shaq bump" to gain position on A. Didn't know who to call the foul on, so I didn't call. Is this a double foul or is it part of the game? No real advantage was gained, as both players were doing it. I did call other fouls on both throughout the night for blocking and holding.