People often say "I only look on the chain," which sounds pretty hardcore, but actually what you see on the chain can also be delayed: nodes haven't caught up, RPC queues, indexers are still slowly scanning blocks... For the same transaction, viewing it with different wallets/websites can show a time difference of several minutes, in simple terms, it's the delay of different "telescopes."

Recently, large on-chain transfers and hot/cold wallets of exchanges being interpreted as smart money whenever they move, I also click in to check, but now I first ask: did this really happen on the chain, or is my data source just synchronized? After being obsessive for a while, I found that the on-chain data is indeed correct; the problem is that the "fact snapshot" you received might be outdated. So for now, don't be too superstitious about a single perspective.