My suspicious thoughts are that no one wants to finish top in this group. Had England beaten Scotland they would likely finish top of the group. Top of group D vs 2nd group F which would likely be France, Germany or Portugal. (England's possible end of comp). Therefore the target is to finish second. Group D 2nd vs Group E 2nd. would be much easier route against Poland, Sweden or Slovakia if Spain win the group, I would have thought.
Yesterday Croatia with no points played out a timid draw with Czech Republic. Croatia now have to beat Scotland at Hampden to go through.
Perhaps my thinking is just a load of suspicious bollocks ;-)