The timeline of Game of Thrones has always been mildly inconsistent. In Episode Two, Grey Worm and Missandei were having awkward eunuch sex in Dragonstone, then an episode later, Grey Worm and the Unsullied Army is on the other side of the continent at Castlery Rock. In Episode Three, Jaime is having awkward incest hookups with Cersei, then in the same episode, he's hundreds of miles south at Highgarden.
Fans often point to these jumps in the chronology as plot holes thanks to lazy Game of Thrones writing. But, the logic of the Game of Thrones timeline was actually addressed in the books pretty clearly by George R.R. Martin, as Reddit points out.
In a section titled "A Note on Chronology" Martin writes, "A Song of Ice and Fire is told through the eyes of characters who are sometimes hundreds or even thousands of miles apart from one another. Some chapters cover a day, some only an hour; others might span a fortnight, a month, half a year. With such a structure, the narrative cannot be strictly sequential; sometimes important things are happening simultaneously, a thousand leagues apart."
So, there you have it. Game of Thrones is not intended to be a linear timeline. If there are jumps in logic, or characters seemingly teleporting around the world, it's because that's how this story is intended to be structured. Plus, do you really want 10 episodes dedicated to Jaime commuting across the country? Do you want to sit on a boat with Jon and Davos for three weeks? This type of format helps cutout all the bullshit so you can see more dragons more often. In other words: Don't complain, Martin anticipated all of this.
