Seriously, come bedtime they're winding each other up. It's getting ridiculous. I've even staggered bedtimes so the 6 year old goes 7.30pm, the 10 year old approx 8.00 pm when it's a school night. (He's a nightmare if he goes any later.)
What would you do if the 6 year old was still wide awake though so the minute the oldest one comes to bed they're pratting about, annoying each other and generally crying within 5 minutes flat of being in the same room?!
Starting to really grind.