@sass Sleeping through the night is 10-12 hours, no wakeups, no feeds.
However with newborns, sleep can be so hard, so many parents get ahead of themselves and make up their own definitions like your friend did. Its fine for each new parent to define it however they want to, however it can be a bit demoralising and not very empathetic to other new parents who struggle with baby sleep as the statement gives the mistaken impression that most babies are ‘sleeping through the night’ while there is something ‘wrong’ with their baby’s sleep.
Interestingly, science actually shows that babies really are crap sleepers, with many not sleeping through the night until 1-2 years old however majority of parents surveyed were unsatisfied with their baby’s sleep and expected that their babies
should sleep better than they do.
As an anecdote…our baby, a great sleeper from the start, started sleeping 8 hour stretches from 2 months. We thought that was pretty damn good (and listening to other new parents, it did seem that ours was a bit of a unicorn good sleeper), but we stilll never used the ‘sleeping throught the night’ until they actually started doing 10-12 hours with no feed or wake up. And even then we only shared that information with only few people as we knew that many other new parents in our circle were sturggling with sleep.