Wait: you know there are two FX slots per track, don’t you?
So you can perfectly add a reverb or a delay to a track that already has a filter set as first FX.
Now if you want both delay and reverb, you have to use a Neighbour track (or exploit @Kacper’s trick and copy-paste a reverb as first FX).
But no need for a neighbour track in most cases.
(Edited: it’s not @sezare56’s trick and it’s for reverb, not delay)