8-2-2-8 Split Sleeper Berth

Yesterday I was on a traditional 8/2 split pattern. I was in sleeper berth for 8 hours, went on duty for a bit, then went off duty exactly at 8:30am. I completed the split at 10:30am and started my day minus the on duty time in between.

Later yesterday evening at 8:40pm I went off duty again for 2 hours and my clock paused for a split after the two hours were completed at 10:40pm. What was new for me was it paired the second 2 hour off duty period with the ending time of 8 hour sleeper berth I was in 12 hours earlier.

So basically the 2nd split included the time I was off duty in the first split by starting my clock at the end of my initial 8 hour sleeper, creating an 8-2-2-8 pattern.

Both 2 hour off duty periods are tied to the first 8 hour sleeper berth segment and both of the 2 hour segments occured after the 8.

It's a Samsara ELD I'm using, I assume it's legal.

 

I should clarify that at the end of the first 8 hour sleeper berth segment I only had one hour of 14 left from the day before. Completing the first 2 hour off duty segment gave me 13 1/2 hours of 14.

 

That was my understanding. What was even weirder was that the second 2 hour break actually reduced the amount of 14 I had. At the 1:59 mark of the second off duty segment I had 2:05 of 14 left, but at the 2:00 mark it went to 1:40 of 14 and paused on that number.

I thought I had complete understanding of the split sleeper rules but not now.