Re: SPOILERS of DRAMAS based on novels
I was astonished to see that the writer ( Maimoona Khursheed) has dedicated the book to Babar Javed as:
"Babar Javed ke naam jinsne iss novel ki dramai tashkeel de ke isse amar banadia’. 
There is no particular role for a mufti. The novel (which consist 145 pages including title and intesaab, etc) discusses the issue of Talaq and iddat on 2-3 pages. The characters of the novel say that they consulted muftis and they said this and that. But at the end of the day Babar Javed will bring Faisal Qureshi (even in a small role) because I think he considers him as naik shagun for his shahkar productions.
Coming to the question, why Salaar and Irsa keeps on missing each other.. What do you expect from a director who is on mission of converting 145 pages novel (novelette may suits this shahkar work of art) into 20 episodes drama. Bara masale ki chaat main kuch to dale ga na.
Personally, if I had to direct this novelette, I would have made a telefilm and told the story in its proper order instead of flashing back again and again. I like Humsafar as they told the story in sequence of the events rather than going back to past in flash back. Although the novel is written in flash back style.