The key is a low flow showerhead on each side. I DIY'd this with a split showerhead, the kind with a wand in the middle of a ring, and it was magnificent both for when my wife and I shower together, which is our norm, and the rare times we showered alone. No waiting for the other to be done with the water with both of us, and no rotating to keep everything warm when alone! Best shower experience of my life
The key is a low flow showerhead on each side. I DIY'd this with a split showerhead, the kind with a wand in the middle of a ring, and it was magnificent both for when my wife and I shower together, which is our norm, and the rare times we showered alone. No waiting for the other to be done with the water with both of us, and no rotating to keep everything warm when alone! Best shower experience of my life
So, halve the water pressure / output in each head.
By lowering the flow, you're maintaining the pressure, which is a lot more important than overal flow
Sounds like something the guy who pays the water bill would say.