I tried once: for the same transaction, I was watching it in two wallets, one immediately showed "Confirmed," while the other took several minutes to appear. I thought I was seeing things... Later, I realized that what you see as "on-chain" is actually the perspective given by the node/RPC you're connected to. The slower one might be queuing, switching nodes, or its underlying indexing service hasn't organized the data yet. To put it simply, it's not that the chain isn't real; it's that your window has latency.

So now, when I see some "on-chain alerts," I tend to look twice, especially during a phase where the market is talking about rate cut expectations while the dollar index and risk assets are moving in sync—it's a confusing time, and people are more likely to mistake delays for signals. Anyway, I’d rather wait two minutes or switch to a different RPC to verify than become a sample for a collapse scenario again.