Many people focus on "large on-chain transfers" to interpret smart money, but the record you see may already be a "pickup code that updates a little after the package arrives at the station"... Slow node synchronization, high RPC load, indexer queue rebuilding—all can cause data delays, and even the same transaction can show different times on different websites.

When I was a beginner, I also thought: if it shows on the browser, it just happened on the chain.
Now I believe more: first check the block height/confirmation count, then compare with two or three RPCs and browsers; a delay of a few seconds to several minutes is not surprising.

So when you see exchange hot and cold wallet movements, don’t rush to jump to conclusions—first confirm whether it’s index delay/cache not refreshed... Anyway, I now prefer to be a beat slower rather than get caught up in the "delayed chain" hype.