[TRWSHSHLX]

For the first question: I'm not sure about the legality of directly connecting a limit switch inline from the DC controller to the motor. However if that is the implementation, the DC motor won't be able to move for the rest of the match (since the limit switch stays "activated" and there's no way to un-activate the swtich).

As for the second question, it depends on how the limit switch is programmed in your code. If the code is like:

If (Limit_Switch is on)
Motor off
Else
Custom controlling code

Then it will shut off for sure since no matter the condition of Wifi because when the limit switch is on then it doesn't matter what the joystick command is.