At the risk of going down a rabbit hole, I recall that the intention was to fully separate them, then some bright spark realised that having two sets of AOCs and officeholders to run them would just add cost and complexity, and there was other low-hanging fruit in terms of cost savings. My recollection was that, with some legislative changes, they could potentially let the domestic operation go past 51% foreign ownership but keep International under that to protect the route rights.
The big question will be if Andrew David at Domestic falls on his sword too, or if he is converted to a group COO role and continues to hold the AOC. Then you have to wonder who is being lined up as Alan's eventual successor - seems Gareth Evans will now be in pole position until somebody else rises up.