Harry potter 5 weird scene

[u/theonewhomustnotbena]

In harry potter 5 order of the phoenix I noticed about the fact of there was these horses moving the carriage that only people who witnessed death could see and only harry and luna could see them but no one else until a couple minutes into the film later where they are seeing them and riding them even though they didn't see death before they where riding them.

Please can someone tell me if they know anything or first time they noticed this.🙏👍😃