The Incarnation is the premise the Resurrection needs; Pentecost is its application. Premise before application, though this is the closest call in the upper half.
Pentecost completes the Trinitarian revelation and founds the Church's whole subsequent existence. Theophany reveals the Trinity first, but reveals it to bystanders rather than pouring it out.
The departure exists to make the sending possible and Acts frames it that way.
The Spirit poured out on the Church against the veneration of the instrument of one death.