That's completely irrelevant, the delay on a text message is on the order of minutes and has no bearing on this conversation.
As I explained, EE was sending legitimate texts over the course of a day to do with a legitimate upgrade being processed and on the same day in the middle of them a scam text arrived pretending to be from EE. That timing makes the scam more believable and so more dangerous than a random blanket scam text.
If that timing was a complete coincidence that'd be extremely unlikely but it could happen. Except now it's confirmed to have happened to more than 1 person. The more people it happens to, the more likely it is that the scammers are deliberately timing their texts to arrive on the days people upgrade or make legitimate purchases. But to do that they would need access to EE's sales data, which would be a serious data breach.
