So, there's a big half iron distance race. The cumulative splits after the bike (before T2) for the top 15 of one age group are as follows:

2:46:11
2:46:12
2:47:52
2:48:25
2:48:46
2:48:54
2:48:58
2:48:59
2:49:00
2:49:08
2:49:56
2:50:06
2:50:08
2:50:13
2:50:17

I see some groupings there (like 10 out of 15?), but one could give the benefit of the doubt and say they were riding legally.

Now, let's toss in the previous wave (in blue), adjust for the gap between waves, and draw some lines:

2:46:11
2:46:12
--------
2:46:40
2:46:43
--------
2:47:29
--------
2:47:43
2:47:52
2:47:55
2:48:04
--------
2:48:22
2:48:25
2:48:25
2:48:30
--------
2:48:46
2:48:54
2:48:54
2:48:58
2:48:59
2:49:00
2:49:04
2:49:08
--------
2:49:46
2:49:53
2:49:56
2:50:06
2:50:06
2:50:08
2:50:09
2:50:13
2:50:15
2:50:16
2:50:17
2:50:18

Coincidences? As Faux News says: "We report, you decide".

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"Go yell at an M&M"