@Pantheos You're thinking that know characters more than themselves.
BMPs aren't one of SHC's greatest enemy teams only due their content and build,they're also so united as SHs.
The moment when Linlin comeback to herself in Udon Prison was the irrefutable proof of this. For me, Oda did that of the perfect way.
The first thing Linlin thought was her good moments with her childrens before enter in Wano.
That show how,same being SH's enemies,all they love,trust and value each others of the bottom of their obscure hearts.
Conclusion: Anyone as you with that thought "BMPs turn against Linlin and help SHs" is just a big fanboy of them,unable of accept that currently in Wano, BMPs will stay in SHs's way so much as Marine and BPs. And if SHs aren't able of overcame this,they don't deserve dominate world seas,they deserve be killed here in Wano.