Yes, unfortunately I was in that case where pagination simply wasn't provided by the feed. Push notifications of course wouldn't have worked (if they were even supported, and I don't believe they were), since otherwise I would have just sat there polling the feed itself every 20 minutes like a maniac. It seems like this widespread limitation leads to the reliance on aggregators, and second-hand it seems google playing the disappearing act with their aggregation service was one of contributing factors to (or a symptom of?) the decline of RSS. Certainly I would have been willing to just shrug my shoulders and use it if it was still operating when I ran into my one and only case of wanting to use an RSS feed.