It’s interesting that the podcast thought of it as a mystery. After the opening chapters I realized the the setup is a total contrivance, and went with it.
Also, @Kelly_Wand is totally correct about the mob being the implied management. The management and the FBI surveilled the same target, and Hamm finds the management’s bugs. @tomchick’s interpretation makes no goddamn sense. If the FBI were aware of the surveillance operation at the El Royale and Hamm had been sent to receive the Kennedy tape, none of that stuff would have been a revelation to him, and he wouldn’t have reported it to Hoover.
Re: sexual/not-sexual - interactions can be sexually charged without being explicitly sexual. Se also: foot massages.