Is time in space/time a linear construct?

[tadeus]

A few years ago, as I was really busy I started to plan time (!) as in this :  I shall drive and arrive there on time at 10:25 am whatever is the traffic and suddenly I had the feeling time had become elastic. lol it was pretty cool

Yes - this is a good description of the feeling.
It can appear also, when you try to combine your experience of different episodes of your life in a meditative state.
So it is not an abstract remembering and thinking, but more to see and feel all as elemental picture.

Regarding the incarnations in time/space there should be only the linearity of increasing experience with each incarnation.
It seems that from the view of time/space into space/time there is no linear time and moment, so that it is only a focus on a special time in space/time.