For 2 days running now they have done this - yesterday they stayed there for over an hour, today it's been half an hour so far. It just feels odd and I feel a bit guilty and a bit surplas to requirements!
The house is not huge so I can hear them perfectly and there's a stair-gate, meaning they only have access to the two bedrooms and landing - not the bathroom. DS1 is the world's most cautious child - drags his feet on slides to slow himself down etc and ds2 is the complete opposite so may climb but he's been climbing since 11 months and is now very competent. He did go through a stage last summer of being covered in bruises but that's finished now and he's got into toys, rather than being obsessed with climbing.
They sound very happy, I just called up to see if they wanted to come down and ds2 answered "busy playing sky racers!" Is this ok or are they missing out by me not being there to talk about what they're doing, join in etc?