So you smile weakly, stride past and say a quick hello. A couple of DON Ts. The sequel s function is to change disaster into goal. You want to telescope reality and summarise what s essential. This is usually where you tell.
Sequels have no length restrictions.
A fast paced book will have long scenes and short sequels. A sequel should have emotion, dilemma, thought and action. E.g. of someone setting up a plan for revenge that has already been discussed in the previous scene. You can create transitions from the frantic feeling of the dilemma to the calmer state of mind that results from knowing what their next step will be. This gives your reader a chance to catch her breath and makes the next scene more exciting.