the.com/digress
To wander off-topic so charmingly nobody notices you forgot the point.
means To stray from the main subject in speech or writing, then usually circle back.
from From Latin digressus, meaning to step away, fusing dis (apart) with gradi (to walk) — verbal sidewalk-leaving since antiquity.
Signature phraseBut I digress, the apologetic U-turn.
Spatial rootsLiterally means walking away before it meant talking away.
Tristram ShandyA whole novel built almost entirely on digression.