Confirm The Clock is a delta counter for comms?
Q, deltas are definitely used for comms between Q and POTUS. The confirmed delta markers are [0], [1], [5], [10], and [15] minutes, [30] days, and [1 year]. There are also others like [2], [6], [7], and [17] minutes (and now the new negative markers).
Thinking logically, it would be easy to deduce The Clock would be a delta counter, a.k.a. a stopwatch. The markers you would wind it with would be the delta markers. You would metaphorically wind it back to the [0] position to look for a delta when Q and POTUS post and tweet respectively. If there was a significant delta, you would then record that delta and see if there were comms (not all deltas have comms, which was been confirmed). You would then metaphorically wind the clock back to the [0] position for the next use.
This is a theory based off crumbs and the already established and confirmed deltas and the comms associated with those deltas.
Anons have been analyzing the deltas recently, and some think each delta marker has a specific significance, but those are just theories. It'd be effective for this theory of The Clock to be confirmed to then expand on it.