I believe the use of "then" is just stating the timing of effects.
If you take PtL for instance, the last sentence states "Then receive 1 stress token." If you received one prior to your second action or before the first, you wouldn't be able to take actions anymore because of the stress token. "Then" in this instance, is being used to clarify when exactly that part of the resolution happens.
Now let's look at Daredevil.
In this instance, once again, "Then" is used to state when an effect of the action occurs. You execute a red speed 1 turn (right or left). Then, you resolve the second part of the action.
So the use of "Then" has so far been used in the same exact way more than once with this game. That is, to note timing within resolving an action. One can reasonably think that it will be used the same way going forwards as well.
*Edited to correctly state Daredevil*
So the errata'd Daredevil says "Action: Execute a white speed 1 (left or right) turn maneuver. Then receive 1 stress token."
The use of "Then" is the same as before the errata.
Thanks for pointing out I was using the wrong version of Daredevil, Khyros!
Edited by GroggyGolem, 18 February 2014 - 12:37 PM.
Rebels: 3 X-Wing, 1 Y-Wing, 1 A-Wing, 1 B-Wing, 1 YT-1300
Imperials: 5 TIE/LN, 1 TIE/ADV, 1 TIE/IN, 1 Firespray-31