My dear, dear friend...
I had decided I wasn't going to post today; letting some things sit & settle - but I'm making an exception for you.
This is very, very important now - and the hospital folk will be asking you or someone for this soon, unless they already have your dad's info on file - they are going to need a copy of any advance health directive he might have created and/or a health power of attorney, which designates a specific person to make decisions about his care.
I'm afraid I'm all too familiar with what you're going through; with the mystifying, exasperating behavior of the hospital staff that you're encountering. Palliative Care can be translated thusly: they will make him as comfortable as they can with pain medication, they may or may not feed him through an IV (based on the health directive), and if he is having trouble swallowing that will probably mean that they'll intubate him, to keep his airway open - to insure that he is breathing. If they do NOT have a health directive on file, they will start a nutrition IV as soon as he is moved while next steps are being decided on.
I see now, why his wife isn't there and you're on "duty" instead. Poor thing, does she have anyone to help her? Would she know if he has a health directive, etc? His lawyer or a trustee, perhaps? Have you gotten in touch with your brother? These are things you could "do" that would have a clear practical purpose and perhaps help clear the logjam or stone wall of silence that you're dealing with, with the medical folk. It won't clear up the cracks in the system... or the absolute insanity of some of the things you're experiencing with them. They will take another scan to assess the second stroke - if they haven't already. The question to ask now - about that stroke, after the results have been interpreted by the neuro docs - is how extensive was it? What area of the brain was affected? My wild uneducated guess is, that if they've decided to move him to Palliative Care instead of the Neuro unit - the stroke was pretty significant and even they are in a "wait & see" mode... looking for signs from your dad that will be indications of his level of functioning, now.
You will have to keep asking about the scan of the second stroke and to talk to a doctor. From the nurses, you might be able to gather some info about his vital signs... what they're giving him for pain, if they're feeding him IV... etc. But, they won't be able to speculate on what happened, what his chances for recovery are... they'll get in trouble with the docs, if they do.
Please understand that the next week or so is going to be terribly difficult and make extra efforts to care for yourself and son. Get plenty of rest, eat something regularly - even if it's only a cup of yogurt or a pack of crackers. It's OK to put your inner work "on hold" for the time being, if that feels right... to care for yourself & son; to take care of your normal business (bills & such); and to come here and process events; to vent or whatever expression seems right. I'll keep checking back to see how you're doing.
The only insight I can offer on your mom's behavior - is that she's facing a brand-new situation and one that she feels totally powerless in. You're obviously stronger than she believed you were, and a force to be reckoned with - you're in motion, clear about yourself and what needs to be done... and you're not asking anyone's permission - approval - or forgiveness either. GS is IN CHARGE... and doing pretty well in that position, too, from the sounds of it. You've probably scared your mom senseless, by being your real self, you know?
I really do wish we had an applause emoticon... you'd get a standing ovation from me.
That said, you're still going through an incredibly difficult time. I'll do my version of praying for you and make sure I'm checking back here for the "latest"; to be here for you.