When transferring on the chain at night, I always see that kind of "coincidence": A just comes in, B immediately transfers out, it looks like there's an insider.

Later I simply analyze the path: first check if it's from the same CEX hot wallet; then see if it's a batch of collection/splitting wallets; finally, keep an eye on whether it's a routing contract, cross-chain bridge, or a common target for market-making bots.
After breaking it down, I realize many "coincidences" are actually just pipelines, everyone is just squeezing into the same channel.

Recently, new L1/L2s are offering incentives to attract TVL, and veteran users in the group complain about "mining, selling," which I also understand...
On-chain, that wave of inflows and outflows looks even more like "coincidental transfers."
Anyway, when I see anomalies now, I don't rush to conspiracy theories; I first map out where the money comes from, who handles it, and where it goes, which keeps my mindset more stable.
Losing money is also good for review.