Isaac (2 and 10 months) goes to bed at 6pm. If he has a sleep during the day, regardless of it being 5 mins or 2 hours, he won't go to sleep until 9pm.
He wakes up at 4ish and comes into our bed, then sleeps until about 6 or 7am.
The time he goes to bed make absolutely no difference to the time he wakes up.