Robert Livingston also said that he called Humes at Bethesda between 3:30 and 4:00 that afternoon. Humes' has said that he didn't go to Bethesda until after he was called by Adm. Kenney at about 5:15. The first public mention that JFK's body was headed to the Naval hospital was at 5PM. He also remembered hearing statements from Dr Crenshaw on the radio that afternoon.
David Lifton pinged a number of inconsistencies in Livingston's various statements if you want to hunt it all down.
How would Livingston know at the time he called Humes that Humes would be the lead doctor - or one of the doctors - in the autopsy? Or even that the autopsy would be performed at Bethesda? Had that been announced on the radio/TV at that time? And I seriously doubt that Humes' name would be mentioned in any story at that time either.
As you point out, Humes testified that he never got any call from Livingston, that at the time that Livingston allegedly made it that he, Humes, was with his family preparing for a social event,
and that he knew nothing at that time about any autopsy that was to be performed on JFK much less that he was going to perform it. Incorrect on that last part. Depending on when Livingston called him Humes had been told of the autopsy.
In any case, my question was about whether any SBTs were discussed during the autopsy by Humes et al. Humes and Boswell were interviewed by JAMA and both said they didn't consider the neck wound as a bullet exit wound until the next day. If that's true then it's obvious they didn't discuss any SBTs since they didn't know where the bullet that entered the back went.