Were you just lucky to capture it in time, or do you leave a recorder running through the day? As I was amazed that you managed to capture Bounce Sombre at 6am in the morning on TWO NI!
I just try and guess where things are likely to occur - for example, for a few weeks in late June/early July, BBC Two NI/Scotland were starting at 7.30am & so filled the gap with PFC. Therefore, a full ident over the weeks was possible - hence I recorded around 6am on either Scotland or NI during this period, and captured a few full/nearly full idents, such as Bounce Sombre in full, as you mentioned, domino - which was almost full, and an almost full showing of Bounce
Then, when I found out about the schedule changes today, I thought that a cock-up/extended showing of an ident was possible, as the schedules had been changed at late notice, so I recorded the afternoon's events on BBC One, and there you have it - a cock-up indeed occured.