Sure, thanks for the response, but for the record, a true hibernation mode reserves a swap file on the disk… so when you hibernate MacOS it dumps everything in memory to this file; which it then uses as it’s rebooting to have everything in exactly the same place, with all your Apps and Docs as they were (currently half the stuff you have open gets dumped, and only some Safari reload some tabs, if you’re lucky)!
…now hibernating, and then going into Bootcamp, would allow us to load up Windows (because you hold down the Option/Alt button as it’s booting which then picks the other partition) …when you’re done with Windows, if you power cycle and choose MacOS again, it’s simply going to read the hibernation file content and put it back as it was ……voila :-)
PS. having true hibernate also means that when the battery exhausts itself in that current deep sleep ‘25’ setting (which does happen after a day or two in my experience), it won’t matter because you can charge it up and still recover the system state to load exactly where you had it the other day…