Freeview Scart(make sure its the RGB one)-AV2 on the E55.Then AV1 on E55 out to the tv/video combi.Make sure the input/output settings on the E55 are set to RGB.They will probably arrive preset to VIDEO.
You can watch Freeview while the E55 is in standby.When you are recording something else,you will need to watch Freeview via RF