Red Sox fans shouldn’t be concerned that Alex Cora had a confrontation with an Astros broadcaster this past season on a bus from the Houston airport to Minute Maid Park. But fans have a right to be frustrated with the revelation that the Sox didn’t even know about the incident as they were considering Cora to be their next manager. While the incident, first reported by Evan Drellich of NBC Sports Boston, draws an unsettling parallel with the David Price/Dennis Eckersley airplane incident during the 2017 Red Sox season, it’s different in one very important respect: It doesn’t appear that what happened between Cora and TV analyst Geoff Blum, and then in Cora’s reported subsequent screaming match with Astros manager A.J. Hinch, had anything to do with on-air content. Nor should Red Sox fans be concerned, at least for now, that Drellich’s sources indicate drinking was involved. As someone who spent several years traveling on charter flights and bus trips with big league ballclubs, I’m qualified to state these things happen quite often. The Price/Eckersley incident, on the other hand, was a case of a star player verbally attacking a club broadcaster regarding stuff said on the airwaves. But where the Red Sox look unprepared is in not unearthing the Cora incident during the vetting process after manager John Farrell was fired.