Maybe it was written before, but I am pretty busy still with all that stuff around (going to change very soon!) but the timeframe between arriving of bm and jinbe made me curious, curious enough to fantasize or theorize about it.
It seems like jinbe is about 10-14 days later in wano then BM, which is pretty much, specially when you remember he is a fishman and way faster in water.
i guess it is because he got defeated and captured by big mum. So there he didn’t just escaped, BM-Pirates made him leave... better... Katakuri let him go and will also come to wano to fight alongside luffy against Big Mum and Kaido.
yes i still stick to the idea of katakuri Freeing his Family from the tyranny of their mother!