Even by CNN simulcasting standards, they're outdoing themselves this hour.
The breaking news about Harry & Meghan is big no doubt but it seems an odd story to go into simulcasting mode over. And with it being a big breaking story about the UK and Canada and having next to no relevance to the US, it's of course CNN Domestic that take the lead. It must be CNN policy for Domestic to take the lead on breaking stories these days, otherwise if you're not simulcasting CNNI on a story like this when will you?
And I know simulcasting is at times warranted but the extent to which CNN do is beyond a joke at this stage - yes it's been a busy last few months newswise but it's at the stage where it's more of a surprise when CNNI do stick to their schedule.
But if you think about it, the reason they simulcast an international story is because domestic want to cover it in breaking news mode as well and it's the most effective way to share resources- either on the ground or expertise etc. The reason they use domestic anchors is because domestic is their priority channel and they want presenters that are familiar to the US audience, most of which are also familiar to CNNI viewers anyway incidentally, but would not necessarily be the case the other way round.
BBC World do just the same, if they need to simulcast they will do a generic BBC News bulletin but in majority of cases News Channel will take the lead, sometimes joined by a World anchor if the situation warrants it.
I think criticism of the domestic simulcasting is over the top, by and large I enjoy it, and the reason I watch CNN is for the US perspective, otherwise why not watch Sky.