Originally Posted by LondonElite

I don't wish to rain on your parade at all, but I personally believe that there is some wishful thinking here. I can't speak for AA, but as you say, you'll be in London and under time pressure. IB almost certainly won't care about what AA's rule are. They don't have any flat tire rule and will probably tell you that you should up at the airport too late. I don't believe they have a OW protection plan. You should check with your insurance about extent of cover, and whether it applies to separate itineraries.