Is there a waY to provide a Timers external Clock Signal on CH1, but only if CH2 is Active?

Hi,

​

I would like to provide / route a Timers external Clock Signal to CH1 pin, but only if CH2 is in Active state.

​

So that it acts kinda like a AND Gate.​

​

Is this possible? If so, how? Is there a sample somewhere I can have a look at?​

​

greetings and thanks,

André​