I'm struggling to see how this is particularly impressive? EastEnders airs multiple episodes per week. I don't really follow it anymore so I'm not sure of the ins and outs of its scheduling during the pandemic but assuming three episodes per week then 257 million online views across the year averages out to less than 2 million viewers per episode. Add that to approx 3 million in the overnights and you're looking at an average of about 5 million per episode. To say it doesn't get the full 18 million plus viewers it used to is quite the understatement.