TR, huge deviation but,
I was fed up with Handbrake House referring to JSPs and Admin letters to which we common aircrew were not privy.
I found what I needed in QRs then went to HBH and asked for a copy of the relevant JSP. I got them to confirm there were no Admin letters pertaining. Then I struck.
I opened QRs at the relevant QR and got them to agree that my understanding was correct. Then the JSP which showed the fine detail. Result! Sepal when everyone assumed no entitlement. It turned out that periods back at base, including weekends, could count as Separation