Cumulative time limit clarification (#1114)

Co-authored-by: ohexter <116421789+ohexter@users.noreply.github.com>

wca-guidelines.md

@@ -169,6 +169,7 @@ To be more informative, each Guideline is classified using one of the following
 - A1a2+++) [ADDITION] If the result from an attempt is unavailable (e.g. the timer was reset), the judge should consult the WCA Delegate and make an estimate of the elapsed time for the attempt. This estimate counts towards the time limit, but must not be used as the basis of an official result for the individual attempt.
 - A1a2++++) [EXAMPLE] If a round has a cumulative time limit of 20 minutes and a time limit of 8 minutes, and the competitor's results of the first two attempts are 7:00 and 7:30, then the time limit for the third attempt is the lowest time of 20:00 - 7:00 - 7:30 = 5:30 and 8:00, i.e. 5:30.
 - A1a2+++++) [CLARIFICATION] If a competitor reaches a cumulative time limit, the result for each of their remaining attempts in the round is recorded as DNS (Did Not Start).
+- A1a2++++++) [CLARIFICATION] If a cumulative time limit applies to a combination of rounds for different events, the order in which attempts are done is the order in which those attempts count towards the cumulative time limit.
 - A1a3+) [REMINDER] The organization team and the WCA Delegate must be mindful that time limits influence the strategies of the competitors (e.g. rushing the first two attempts in hopes of meeting a cutoff in a cutoff round), and that changing time limits after the start of the round can disadvantage some competitors unfairly.
 - A1a4+) [REMINDER] If a competitor has accidentally been permitted to exceed the time limit, the time limit must be enforced retroactively, and the judge, competitor, and WCA Delegate should be informed (see [Regulation 1g2](regulations:regulation:1g2)). Judges must always be aware of the time limit for a current attempt (which might depend on previous attempts, in the case of a cumulative time limit).
 - A2c1+) [REMINDER] In the past, score sheets have been used to cover puzzles while leaving some sides exposed. This is no longer permitted.