Not sure if you are referring to a 'Freeview' digital box, but if so, try this combination:
TV aerial into Freeview, with Freeview TV scart to TV (AV2), and Freeview DVD/Video scart to DVDR AV2 with the RF out going to ANT IN on DVDR. The DVDR then has ANT OUT to TV ANT IN, and AV 1 Scart to TV AV1.
You will then need to manually select an AV input on your DVD recorder when you want to record from your digibox.