Everyone has missed a radio call or handoff...it happens for one reason or another.
As humans we get tired...Everyone has probably experienced that and can relate.
I have no doubt that they are above average aviators, and men of integrity, but have a hard time grasping how a merger, and being buried in a mountain of changes would cause you to lose positional awareness to such a degree that you overfly destination and ignore a discontinuity on the FMS/Map. I would think it was better to say I was sleeping?
I try to learn from others mistakes, and know except for the grace of God go I- but hard to understand this one.