Entirely depends on the mechanics being discussed.
D&D had better wilderness exploration rules than 5e (which are almost nonexistent).
For each Day
- Party decides direction of travel
- Check for losing direction
- Wandering Monsters
- DM description
- End of day
And the flow for exploring dungeons was much more explicit and streamlined than 5e:
For each Turn (10m)
- Wandering monsters (1d6, every 2 turns)
- Party decides course of action
- DM describes result of action
- End of turn (expend torches, spell durations, rests)
It had excellent systems for how NPCs/monsters would react to the party (
Monster Reaction Roll) - more explicitly allowing for non-combat solutions to encounters. Most intelligent creatures don't really want to fight.
And when a fight did break out, the
morale rules helped demonstrate how few creatures were willing to just fight to the death. The same applied to the party itself. There were rules for fleeing a combat and cool things like how to distract a pursuer (food, loot, etc.) to try and get away.
These are all mechanical systems that were either lost or abstracted in later editions, including 5e.