It seems clear that Mission's
if the previous turn wasn't yours is similar to Outpost's
this can't cause you to take more than two consecutive turns.
The result of both is that you can't get the card to give you two turns in a row.
It got me thinking, why couldn't Outpost have this wording too? And the answer is that it wouldn't work the same. Since
if the previous turn wasn't yours is evaluated on-play, it would give you an extra turn per Outpost you play in the same turn. Only Outpost-on-an-Outpost-turn would fail as before.
The reason it works on Mission is because it's restricted to one buy per turn.
So would there be any way to avoid all this Duration confusion, and have a "failed" Outpost (or Throne Room etc) get discarded just like a "failed" Tactician?
How about a wording like on Fool's Gold or Crossroads:
If this is the first time you played an Outpost this turn: Take an extra turn after this one.But wait. Now Outpost-on-an-Outpost-turn actually works.
So I guess:
If the previous turn wasn't yours and this is the first time you played an Outpost this turn: Take an extra turn after this one.Could it be improved on?