Split Sleeper Berth Question

Hey there everyone! I am making my way through High Roads Training and have a question about the split sleeper berth rule. I believe I understand the split sleeper berth rule but just wanted to double check here.

Section 13.4 on the bottom of the page where there are two days of log books entries. Using the example there on day two, I am off duty 2 hours from 5 a.m. till 7 a.m. This is the second rest period as I took the first 8 hour rest period from 2 p.m. till 10 p.m. where I could then reset my 11 and 14 hour clocks. From 10 p.m. till 7 a.m. I was on duty for 9 hours (7 hours driving, 2 hours off duty which counts against my 14 hour clock). I now have 5 hours left on my 14 and 4 hours on my 11 hour clock.

If I then drive from 7 a.m. till 11 a.m. and am then off duty from 11 a.m. till 12 p.m., I am out of hours on both my 14 and 11 hour clocks. Then at this point I have the option of going off duty for a full 10 hours which would reset both the 14 and 11 hour clocks or I can take another 8 hour rest in my sleeper from 12 noon till 8 p.m.

If I understand this correctly, if I take a 8 hour sleeper berth rest from noon till 8 p.m., I can then reset my 14 and 11 hour clocks but I would have to recalculate my hours starting at end of the 2 hour off duty period that ended at 7 a.m. If I was on duty for 5 hours from 7 a.m. till noon and drove 4 of those hours, this is prior to my 8 hour sleeper berth rest, I would have 9 hours left on my 14 and 7 on my 11 hour clock and within those remaining 9 hours on duty I would need to do the second two hour off duty/sleeper berth rest and would be out of hours on my 14 at 5 a.m. on day three. Does this make sense or should I just delete this post and start over?

For those who have stayed with my post reading it up to this point, thanks! I am not sure if I would have! ha ha ha As someone who is just starting out, there is a lot of info to intake. But I want to understand how this works. I just finished my 1 st week of CDL school, we watched a video about HOS and I know this will be covered once I get to a company. Lastly just curious how many drivers with experience use this rule.

Thanks for you time.