That’s the last we saw of the fight.
Does anyone think Oda finishing ominously with Blackbeard grinning and about to use his DF nullification attack is a good thing for Law? Especially when we haven’t went back to the fight in ~15 chapters?
Oda’s already moving on to setting up Blackbeard getting involved in Egghead, with Garp and with Shanks. There’s not much set up for Law doing anything.
The only thing saving Law’s blushes is the opponent he matched up against. Shanks would one-shot Law as well. And Kid could land Damned Punk on Blackbeard if he’d been in Law’s place.
Both are nowhere near ready to genuinely fight a top tier solo. That’s why the Big Mom fight played out the way it did while Luffy was actually going toe to toe with Kaido by himself.