Run interactive process inside already-running console application without opening new window

Question

I realize this looks like a lot of other questions out there, but I looked at all of them for hours and never found the real answer I needed, so hear me out:

This is

Answer 1

Simple: ProcessStartInfo.UseShellExecute=false. That's it! (I know, I couldn't believe it myself).

After hours of trying all sorts of things, this is what worked for me - without even setting CreateNoWindow=true! Also, at the end of it all, I did find this MSDN post that confirms what I found out. Go figure!