MIxed voltages in a single conduit

We have an application where, due to severe space constraints, we are going to have to mix voltages in a single 32mm conduit. The cables are:

1. 24Vdc, 4 wire stepper motor supply (limited to 4A by controller)

2. 110Vac drive motor supply (rated at 19A max)

3. Screened 24Vdc control cabling (for limit switch)

I understand this is far from ideal, but is it acceptable?

Will twisting the stepper motor supply help (i.e. have the A & B poles as two separate pairs).

All wiring will have same rated insulation.

Again, I understand this is not optimal, but are there any insurmountable reasons this cannot be done?