It is technically possible to install a second controller on a Talenic TN-X3 to power the front and rear motors separately. However, whether or not it will work as intended depends on a few factors, such as the compatibility of the controller with the motors and the overall electrical system of the Talenic TN-X3.
Assuming the second controller is compatible with the motors and the electrical system, there are some potential advantages to using separate controllers for each motor. For example, it may allow for more precise control over the speed and torque of each motor, which could result in better overall performance and efficiency.
That being said, there are also potential drawbacks to using separate controllers. For example, it may be more complicated and time-consuming to set up and maintain the system, and there may be a higher risk of electrical or mechanical problems arising.