Perhaps both at the same time, as intended by Pirandello: tragedy  (the story of the messy family drama Six Characters are trying to relate) and comedy (the story of a rehearsal unexpectedly interrupted by those 6Ch.).

The play (not the play-within-the play, but the Six Characters in Search of an Author strikes me as extraordinarily clear-headed & logical, in fact even cool in its detached observations of us, humans – in life not very apt at logic and often not aware of our weaknesses & emotional tangles.

And perhaps our confusions here (yes, in plural – as evidenced by your numerous, great posts: rich in observations, right in the impulse to question!), vis-a-vis this play, are not due to the complexity of the play itself, but exactly to our human uncertainties and paradoxes.