Examining past formations on the chart provides insight into future price movements.

$BTC experienced a lag of 2-3 weeks while passing its previous peak during the previous bull period. But when it passed, the price continued rapidly.

Altoins joined the rally later.

As for altcoins, usually 10-20 of the strong ones that existed in the previous period are making new peaks, while more of them were listed during that bull period and the potential of fresh projects is higher.