In Macbeth, at the end of Act 2, Scene 3 Macbeth reveals that he killed Duncan's servants:
O, Yet I do repent me of fury
That I did kill them
However, doesn't this appear as a plot hole when we take Lady Macbeth's reaction into account ("Help me hence, ho!")?
I see two interpretations:
Macbeth killed the servants when he murdered Duncan. However, as we see later in the play that Lady Macbeth has no capacity to actually murder Duncan ("Had he not resembled my father as he slept, I had done't"). So, in my opinion, there is absolutely no chance Lady Macbeth wouldn't have noticed the murdered chamberlains and not say anything to Macbeth about it when she returns after marking them with blood (even if they were under stupor from the alcohol, seeing whether someone is dead or alive is not very difficult) so this seem improbable in my view.
Macbeth murdered the chamberlains after Macduff reports the king has been murdered. This can't be possible since Lennox went with him (presumably, "Exeunt Macbeth and Lennox" II.3.72) and murdering the servants in front of a nobleman is likely to elicit some reaction in the very least from Lennox in the confrontation - but he does not mention it; nor are we given any hints as to whether Lennox supported Macbeth (if any, he leads the army against him later on).
So the way it looks to me, this appears as a plothole. Or is there something I am missing here?