Split Sleeper Question

Y'all are looking at this a little bit backwards. The failure to take the sleeper part of a split break doesn't affect what you can do in the future, but it can cause a violation in the past.

After a 10-hour break, your 11 and 14 are reset no matter what. However, failure to log the seven hours sleeper time invalidates the prior day's split. So instead of a legal 14 hour workday split by a 3-hour break, you now have a 17 hour work day and you're in violation.

 

Reading all this I got a headache!
You get tired, take a nap.

 

I wish I could, if there is appointment set, loaded late and running tight

 

If you were legal at 5pm. Maximum 5.5 hours driving between 9:30am and 5pm.
You are legal for any action except driving, until either you take a 7 hour sleeper (up to 9-3/4 hours) would give you 5.5 hours of driving available or combined off duty and sleeper berth equal to or greater than 10 hours (to reset your 11/14 clock).
This is how I understand the current rules.

 

I commonly use the split to extend my 14 hour clock. Actually, as I'm sitting at a receiver as a work-in waiting on a dock, I'm using as I write! After I get done, I'm gonna mosey over to the Pilot just down the road (got a reserved parking spot waiting for me) and take a 10. I do this, or similar often. I usually don't go to SB status right away. May be an hour or 2 after I'm stopped and in Off Duty status. But, when I'm finally ready to sleep, I'll pop it into SB. I just have to make sure it stays in SB long enough to not get the violation (I usually wake up and start roosting around before SB break is finished). If I'm up and have completed needed time in SB status, I'll usually change it back to off duty. And, always try to get my SB portion started early enough that it's finished before my 10 is finished so I can start then with a full clock (providing I have at least 14 on my 70).
I've only had 2 minor HOS infractions. One time was right after the change to the new rules and thought if you took a full ten, you didn't need to indicate the SB part. Other time, I popped into Drive for 8 seconds when I should have been in PC. I was starting my return to the terminal from the grocery store and forgot to put it in PC before I started rolling. Fortunately, I caught the error and quickly. I stuck "Oops, meant to be in PC" into the comment and never heard anything about it. I was educated by my driver leader about the SB thing, but not fussed at.