This is another way to weasel out of yet another senseless bluff loony khan has made.
1- Constitutionally and legally resignation has not to be 'accepted' by speaker to be considered executed, once a resignation letter has been written and reaches the speaker, parliamentarian is considered to be resigned. Ask Hamid Khan.
2- Morally speaker is completely irrelevant, PTI didn't trust the parliament thus they resigned. Why are they trying to find loop holes to justify their attendance at parliamentarian sessions now - they have resigned they should stay out. No one is asking them to attend with guns at their heads.
I told you earlier that a lot of humiliation lies in waiting for PTI (PAT is already at rock bottom so it doesn't matter for them - though kudos to Qadri for gaining legitimacy by using and abusing PTI so perfectly).