The issue is really on the play clock operator. There is no way the clock was reset to 40 seconds after that play was blown dead. Just rewatched that sequence.
That's what I was thinking too. I thought I saw 28 seconds on the game clock when the play was made and no way could they get a delay of game penalty (40 seconds) when they should have had the remainder of the game clock left on the play. I also wondered why NBCSN didn't go back and review the whole play along with the game clock & play clock. They ask Fobbs about it but didn't investigate it themselves. They may have actually found it but didn't want to make the officials look bad on that call and didn't show it.