Just now I saw that kind of "coincidence transfer" on the chain again: A sends to B, then after ten minutes B sends to C, with similar amounts, and someone in the group immediately said money laundering/conspiracy... I was also led by the rhythm at first.

Later, I stubbornly broke down the path: first C exchanges coins on a DEX, B is actually a routing/aggregation wallet (like a transit station), A's transaction is more like paying a fee or change after cross-chain transfer, and the timing makes it look very "staged."
To put it simply, many coincidences are just because everyone is running within the same toolchain, and drawing it out makes a connected line.

Recently, developers are super excited about modularization and the DAO layer, but users are completely confused, and I’m about the same... But the more this happens, the more I need to break down "seemingly story-like" transfers into several small actions that can be explained, otherwise it’s all just guesswork.

Next time, I plan to start by ruling out the interaction objects (contracts/routing/exchanges), then check if the funds are from the same source.
What step do you usually look at first when judging such "coincidental chain links"?