Hmmmm, well I don't know if this will help or not, but I certainly can't go on my mums labour.

I was first, 2 days before due date, and a very long labour, almost two days.
My sis was second, at 37 wks, labour only 4 hours - she was out in a flash!
My bro was born emergency c/s at 32wks.
And my other bro was born VBAC after 6 hours labour, at 42wks.

So if I based my labour on my mum, I'd have a range to choose from!

I think my answer would be, probably not. But I guess its possible. Would love to hear from others who found this to be true