Just the way the new wind will likely fill in. It’s normal when you approach a lighter patch for the sailor behind to catch up, if Alex was directly behind Armel that would be one thing but there is a big East/West seperation. IMO Alex has taken a gamble knowing he will hold better wind to the East and why not as if he follows Armel he knows he’s lost.
This is from Mark Turner who ran Ellen McArthur’s operation (co-owened it I think), he’s the new CEO of Volvo Ocean Race, lives in Switzerland and does quite a bit of road biking. Met him in Geneva airport once off loading his bike bag. You can follow him on facebook if you wish.
Armel v Alex reminds me in some ways (but not all) of Ellen coming back up to MichDesj from 600 or so miles behind in the 2000/1 Vendee. She took the lead for a few hours even up the Atlantic in very similar fashion, but there was not much doubt Mich would indeed get to the new wind first, if only just in the end. Seems like Armel should be safe further west once through the light patch, just like Mich was 16 years and 4 editions of the race ago (OMG, that long?!)…but I guess you never really can be sure…
I did post earlier before I had seen Mark’s post but it’s not a unique insight, wind always looked like it would fill in from the West imo