Quickest way to join these two edges?

I thought to use join, but it will only let me select on small section of edge at a time. There must be a way to select the entire first edge then the entire second edge then join, right?

Any help appreciated.

File attached under image

helpedge.3dm (6.4 MB)

A post was merged into an existing topic: Quick solution for gap formed between an extrusion and patch surface?