I tried Who in the mid-90’s but always felt like I’d walked into a 3-hour movie two hours late. In another lifetime, perhaps...
You probably did. Classic (pre-2005) Doctor Who episodes are only 22 minutes long, but a single story is presented over a “series” that is 3 to 10 episodes long. New Doctor Who episodes are typically one hour long, although two-parters are common, and there tends to be series-long story arcs. And, of course, the premise has been added to over decades.