For TPIR, when both versions were 30 minutes, Barker's version did four a day (two and two) and Dennis James did three (one and two). When the daytime went to 60 minutes they did two shows. They may have TRIED doing three at first, not sure. I saw TPIR tape in 1975, '78 and '95 (with Bob and Rod).
Never got to see NTT. In 1978, I got to see You Don't Say with Jim Peck and John Harlan, NTT's announcer. He told us that NTT finished taping for the season the day before. They only did 26 shows a season.