Sleeping through the night

What exactly is sleeping through the night for you? Especially those of you with babies between 2 and 6 months. Is it baby literally sleeping from x time to y time with zero wake ups, not even for food? Or is it baby sleeping through the night and "waking" for dream feeds. As in they don't actually open their eyes at all, just hum and ha, fully asleep though,until you shove a bottle/boob in their mouths and they eat while sleeping?

Curious to know