That is what I would have guessed. I even recall reading of FB VI being used as escorts for daylight raids by Lancs on the Cherborg area after 6 Jun 1944. Admittedly, the Luftwaffe had its hands full over both France and Germany at that time, so interception by German fighters was pretty unlikely. But I have never heard of Mossies being used as escorts for daylight raids other than that time. An FB VI one on one against an FW-190 had little hope of surviving unless they bounced the German or were far enough away to outrun him. Now, two FB VI against a lone FW-190 was a different story, assuming they were well flown.