To be honest, it still sounds more like habitual waking than hunger to me.... Yes, many 8 month olds are still waking over night and often still nurse during the night - although I'm more familiar with EBM than the combo... Is it possible you just didn't do the w2s or pu/pd quite long enough?
![Undecided :-\](https://smiley.babywhispererforums.com/Smileys/classic/undecided.gif)
Waking at exactly the same time really seems more like a sleep issue than a hunger issue, but it's hard to tell.... As Katie said, a lot of other babies at that age still have one waking.
BTW, what sort of flow nipple do you use on the bottle? If you want her to take more bf, it might help to use a slower flow, if you're not already...