David,
Yes - you are correct. To pause the timing, a runner needs to visit the two nominated controls sequentially.
For reference see:
https://maprunners.weebly.com/pause-timing-for-a-leg.htmlThe rationale is stated there:
If the participant visits a different control to the matching end-of-pause control, that control will be punched but no pause in timing will be credited to the total time. (ie no time deduction).
To do otherwise would open the possibility for "gaming the system" by having the time of multiple leg’s eliminated from the overall time.Peter