The separation/dissociation is central and crucial to AVRT.
Otherwise, if I re-integrate IT, I'll hear the AV say 'I want a drink' and I'll either believe that thought is me and take a drink, or perhaps I'll urge-surf, argue, rationalise with the thought, or attempt diversions, from the thought and associated feelings, such as phone, meetings, ice-cream etc., to prevent a 'relapse'.
Whereas, with the Big Plan and the separation of the desire to drink (Beast and ITs AV) when I hear the AV 'I, we, you want a drink'. My brain's AV filter, automatically recognises IT as not ME, because I don't drink!
That's the easy part, now and forever. The hard part was performed and over last year - when I learnt AVRT and made my Big Plan.
No separation - no RR/AVRT.