My first DC was 41+1 so I assumed I’d be around 40 weeks + this time too.
However I’m currently 36+5 and am much crampier than I was at this gestation last time. Last time I had cramps in the evening for around a week before.
2.5 year (ish) age gap. I think age gap probably makes a difference, my friends who had really small gaps had their second babies weeks earlier than their firsts.