In Dragon Ball Super we see a huge boost in power of Piccolo, who jumped from
Being weaker than Super Saiyan Gohan in the Resurrection of F saga, to be stronger than SSJ2 Gohan in the Universal Tournament saga.
This doesn't make much sense unless a decent amount of time passed between the arcs and he did some special training or something. Therefore, my question is, how much time passed in Dragon Ball Super between the Resurrection of F saga and the Universal Tournament saga?