IL-2 1946 is limited to use four USB "game devices" (joystick and similar). Period.
1. TrackIR 4
2. CH Pro-Throttle
3. CH Pro-Peddles
4. CH Fighterstick
above are see by PC as "Game devices".
5. CH MFP
6. USB Mouse
7. USB Keyboard
These above are see by PC as "imput devices" (keyboard/mouse)...
What counts are congtrollers (stick, throttle, pedal...) show under "Game devices" in Windows Control Panel.
With PPJoy (PITA to use) is possible to combine two BU0836 as one "virtual device".
Witth Xpadder too - but this dont recognize analog imputs (axis), only buttons.
I dont see how plug a gameport (X45) device into BU0836 without remove their internal "guts" and rewire (in short, make a "new stick")...
With a keyboard mapper (SVMapper or similar) inputs (buttons) from a 5th device is not usabe in IL-2 (sice are not possible to map under IL-2 GUI)?
A short cut: wire your USB Pedal axis to one BU0836...