K01 vs K99 NIH Awards

r/

Hi all,
I’d love if someone could explain a K01 vs K99. I know a K01 is for up to 4-5 years of funding. Is the idea that if one does not get a K01, you apply for a K99 towards the end of your post doc? Also would someone apply to a F32 and a K01 or choose just one? And are both K01 and K99 awards pathways to getting an R01 down the line when you’ve secured a tenure track position?