Personally, I don't like the programme being split in two. It ruins it for me. I could watch the full 2 hours and fast forward through the adverts....maybe that's why they did it???
Was glad I Sky + last weeks started watching it at 8.30 skipped the ads and then started watching tonight's episode immediately afterwards again skipping the ads and the long intro showing a few minutes of last weeks programme again as a reminder. Two hours reduced to probably 1hr 20 minutes of Lewis.