In the past, I would often exclaim, "Wow, that's such a coincidence," when I saw on-chain transfers—two transactions of the same amount at the same time—immediately imagining it as a whale's secret signal or the prelude to a new round of dumping. Now thinking about it, most of the time I was just scaring myself...

If you break down "coincidence," it usually means: exchange hot wallet consolidation/distribution → routing or multi-signature in the middle → then distributing to a bunch of addresses, plus bots doing scheduled, batch, template-based transactions, which visually look very much like "someone is sending signals."
Recently, everyone has been talking about staking unlocks, token unlock calendars, and I get nervous too, but now I prefer to trace the path: where did it come from, who did it go to, and whether it eventually returned to the exchange's deposit/withdrawal address; if not, I don't get ahead of myself.
When I feel the urge to rush in, I force myself to write down a reason for entry, or else I can easily get caught up in the rhythm of "coincidence" and get carried away.
A misconception among beginners: same-amount transfers = insider trading.
My current understanding: same-amount transactions are more about process automation; the key is whether the endpoint is a cash-out point.