I've no idea what Bora are doing.
I think the danger is Wout van Aert up front as a satellite rider for Vingegaard.
It means if Vinge launches it on the Tourmalet, everyone would be totally screwed (even more so than usual). So I reckon Bora are pulling because they want this one to go down to a fight on the last climb & 'hope' they limit their time losses there.