A series of objects are following a spline with a certain separation from eachother, trying to seamlessly loop their motion

Hi, I am trying to do the same and I’d like to know how you set the array and the timeline. I need instanced static meshes following themselves with a certain spacing but the second object starts only when the timeline ends (at the end of the spline path). I don’t get to see more than one object running on the spline at the same time.
Really appreciate any help.
Thanks