New here and i need some help with my BluePrints

So to give you an outline i have an enemy character that i want to walk around the map patrolling, i have made a spline path that doesn’t work and a line of sight so when the enemy sees the character they will start chasing, which that does work.
But what i also want is for if the character gets to far away or out of site for x amount of time for the enemy to stop chasing and return to the assigned path for him to start patrolling again.
I will post pictures of each blueprint and the nodes, sorry im new to most of this.



And also with the spline it doesn’t join so will the enemy automatically jump the gap to the line and go around again or what.

Thanks guys

Heve a look at AI and Behavior Trees.
There is a tutorial in the doc: Behavior Tree Quick Start Guide