LOL I don't have a 6yo but have worked in pre-school and early childhood (my area of study at uni) and it is normal. I knew a young boy who went ON and ON about his NRL team, he could name the players and positions and all their wins for the year. I bet he could have given a play by play commentary had I asked!!!!!!!

Not sure theres much TO do... nod and smile and wait til school goes back I suppose. Maybe introduce 'quiet time' lol quiet reading or drawing or something so you can have a coffee in silence.