Walking after eating

Bit of a funny one today, but would still be interesting to hear some educated thoughts.

A lot of cultures incorporate a leisurely walk after a meal, which is said to have benefits for the body and digestion in general.

It is also said thad however that one shouldn't eat while walking, or even just standing.

If both are true, how long ought to pass between the last bite, and the first step?

Please no AI responses..