How you will identify the current phase of bull is getting over ? No one can be sure when that "after bull run" point is going to happen. Theoretically after bull run prices will fall, but with respect to bitcoin prices we cannot be sure we have reached an over bought zone so that prices will start falling back before another bull run.

As per my technical analysis, this bull run may last till $2000 prices regardless of what would be the result of bitcoin ETF will get. Because bitcoin already got sufficient media coverage to get enough new investors to reach there.