Asks me to tell him but then doesn’t text back?

I’ve been talking to this guy almost the whole year now. We text every single day. He knows literally everything about me. I’ll sometimes have rants that I text him, but I always tell him before hand that it’s a rant meaning it’s going to be long. Tonight he asked me how my day was and it was absolutely terrible so I told him it’s a rant. He told me to tell him anyways and that he wants to hear it. So I did. I texted a long paragraph and at the end I told him I was sorry for it being too long and that I do appreciate him always wanting to hear them. He hasn’t texted back and it’s been over 2 hours. He’s working rn so I know he could be busy, but he looked at one of my insta stories I posted after I texted him. This has happened in the past where I’ll text him a long rant that he said he wanted to hear but will take hours to respond. Maybe he just doesn’t have time to read it all rn ? And I don’t want to double text him and bug him. What do I do? Just wait for him to text back??? Like why ask to hear it but take forever to text back