I went to bed at about 10.30pm and gargantuan means when i felt bloated and could literally not eat anymore. I don't eat like this every night.
I woke up at midnight, then 2am, 4am and gave up sleeping at 6am
Eating at 8 ? Heck, eating at 12 isn't going to disrupt me, unless it was such a 'blow-out' meal I lay there uncomfortable and wishing I'd not abused my poor stomach.
Yes, I agree with OG,you had clearly overdone the eating and the disturbed sleep was your body telling you it needed to be active in order to help with the digestion process.