Did the BBC use a Nour Al Din Zinki supporter as researcher for Mayday series?

Abd AlKader Habak was a researcher on the BBC series Mayday, produced by Chloe Hadjimatheou. While western audiences were swamped by images of him supposedly saving a child from the Rashideen massacre in April 2017, survivor testimonies that I gathered placed him prior to the planned suicide attack, chatting amicably with the armed groups led by Nusra Front or Al Qaeda in Syria.