I tried once, staring at a large transfer waiting for it to "become on the chain," and meanwhile my browser was still spinning, and someone in the group had already taken a screenshot saying they saw it... It was only then that I realized: the RPC node I connected to was a bit slow, and the indexing service was also queuing. You think you're watching the chain, but you're actually looking at a "replay on the chain" that someone else has transported for you. To put it simply, the node producing blocks is a fact, the RPC is your asking route, and the index is a map someone else organized for you. When one of them stalls, your reaction is a half-beat late. Recently, developers have been excited talking about modularization and the data layer, while users are completely confused. I find it quite fitting: the more layered the underlying system, the more likely the information is to reach you in real time. Anyway, now I tend to silently count to three whenever I see a "sudden influx/outflow"... Maybe it's just that I’m late on my side.