Again, I wouldn't really go as far to say it's absurd. Sure, it's far more probable that they won't both go on a ridiculous run between now and the end of the season.
Us all playing Sheff W is a big help as in theory that should be 3 points all round, plus their game against each other effectively cancels one or both out and allows us at worst to not lose ground to one of the two.
But there's plenty of opportunity for things to change. This last stretch of fixtures is a pressure cooker and I can predict possibly one of the three dropping off by a fair amount. Similar to Sheff U last season when they only picked up 4 wins from their last 10 after winning 11 from 14. Baring in mind they went 5 points clear of Burnley at the end of that ridiculous run.
If a side does drop off we just need to make sure it's not us.