Un connected faults
Something I have seen on more than one occasion is un connected events that later turned out to be connected, almost always in the electrical department. Resetting a switch or being told it is fixed is not the same as finding the cause of the problem.
I suspect there some friction between the captain and MX over what was acceptable.
A few years back I was sitting in 1A and witnessed just such a show down. The Captain wanted a part replaced. The mechanic said he could do it only after the captain talked with his boss. The captain refused, he said we are not moving till the part is replaced, stop wasting time and get it fixed. With the wrong people in the right mood the event could easily have escalated.
It will be interesting to see what gets made public on this.