My recollection is that the FTC did investigate, but that it was decided that the EELV/ULA situation was preferable to maintain assured access to multiple launc

My recollection is that the FTC did investigate, but that it was decided that the EELV/ULA situation was preferable to maintain assured access to multiple launch vehicles (Delta+Atlas) and stop Boeing and LM from running each other into the ground. (I think there was serious industrial espionage too).