The two comics have been filming with celebrity guests over recent days in a residential flat.
Emily commented on one post: "BACK AT IT! Filming begins for brand new show. Excited to release details soon!"
Streaming platform BritBox, which is run and 90% owned by ITV, is working on a chat show format based around archive clips of old television comedies, inviting speculation that this is the show that the comedians are currently recording.
Love, who presents a show for BBC Radio London and has just completed her first year on ITV's daytime chat show Loose Women, is fast becoming an ITV fixture, having recently appeared on Sorry, I Didn't Know, Don't Hate The Playaz and Celebrity Karaoke Club.
Atack, meanwhile, is also cementing her relationship with the network, after joining long-running ITV2 panel show Celebrity Juice in the autumn as one of two new team captains, and launching her own stand-up/sketch show, The Emily Atack Show.
An ITV spokesperson declined to comment when contacted by British Comedy Guide.