I think the MD guy was talking to Salaar.
But still confused about the fire incident, If not Kamran, then who? I don't think Salaar could've done such thing, that would be way too wild and shocking.
Episode got over in a jiff, mainly because I just skipped Zain's and his family's scenes altogether. Ain't nobody interested in that.
they dint drag it and make it the focal point of the show and integrated well and beautifully it seems

?
After all he promised to take back everything. And Salar launched new company, maybe achhaa kacha chal Rahi hai business.