They don't normally have one hour highlights. In order to watch stage 4 and 5 you may need to download them from somewhere, assuming someone uploaded them by this time to a torrent site or something; or check youtube. A final option would be to get the vuelta package form universal sports for $14 or $15 if you live in the U.S. In the future you can try to watch the stages on Eurosport, if they aren't restricted to your area. They have live coverage and rebroadcasts of all the stages. Good luck