So reading between the lines gave you insight on how BB would react to Gaban. Got it.
He obviously wanted Hancock's fruit, it is important, that's why he came, but he wasn't sure he could take on Rayleigh, without a high diff fight, even if he would win.
Do i think he would risk if, it was Gaban, i think he would.
He attacked Law right after that, so he didn't see him as a big threat. Gaban would be inbetween that, more of a threat than Law, but less of a risk than Rayleigh.
That's reading inbetween the lines.