What I mean is if you don’t slice time into slots, you’re not using time slicing. It doesn’t make sense to talk about time slicing at all anymore

Two devices can transmit at the same time with all sorts of setups, even on the same frequency. And it’s not inaccurate to describe time slicing as “a method to allow multiple devices to transmit and receive simultaneously”

The question isn’t valid. Being truly pedantic would be pointing out that any number of devices can transmit at the same time, you didn’t say the messages would be received