I hope so. I'm no expert in semiconductors but current 5G phones with 855 do the same thing with integrated LTE and they're still a hot mess. Now they're offloading even LTE to that chip, so it'll not shut down even when there's no 5G. In 855, it could be turned off. Whatever was gained through optimisation, could easily be lost by using an external modem. Similar things have happened in past with LTE modems.
Well, we can only speculate. We will know for sure once it's out in real world.
