Complex sentence: Until 2004 "1 +1" broadcast only 15 hours per day-from 7 AM until 10 AM, followed by a break for the four hours, and then resuming live broadcasts from 2 PM until 2AM.
Split into simpler sentences: Until 2004 "1 +1" broadcast only 15 hours per day. Its program schedule was from 7 AM until 10 AM, followed by a break for four hours, and then from 2 PM until 2AM.