Recently, on-chain, I keep seeing those "coincidental transfers": A sends money to B, and B immediately distributes it to a series of new addresses, looking like someone is communicating in code.

Later, I force myself to analyze the path: first check if it's hot wallet transfers from an exchange, then see if there's a cross-chain bridge/aggregator relay, and only then suspect real people are laundering.
Honestly, many "coincidences" are just tools breaking the process into several hops, and eyeballing it can easily lead to mind-reading stories.
In blockchain games, with inflation + studio washouts, the fund paths look more like an assembly line, and when the token price fluctuates, liquidity is spirally recovered...
Now I try to only trust the few segments that can be clearly explained, and treat the rest as noise, to avoid emotional reactions and impulsive actions.