Check out some of the blogs by vegan body builders. In general, from the research I’ve been doing, we don’t need as much protein as we’ve been consuming as average Americans (not directed at you, just a general statement).
Many healthy vegans are active and are only getting like 10 to 15% of daily calories from protein. Fat is also not a big percentage. And it seems to be pretty healthy for them. Huel already has a pretty decent amount of protein in it. You may not need to fortify your Huel with additional protein powder, even if you’re strength training. Again, I’m not the expert, just been reading a lot about this kind of stuff recently. Check the info from guys who are weight lifting and eating a plant based diet to see how much protein they’re using.