Limiting it to games that Ben played in, these are their regular season games without Bell:
2013-09-08 PIT vs. TEN L 9-16
2013-09-16 PIT @ CIN L 10-20
2013-09-22 PIT vs. CHI L 23-40
2015-09-10 PIT @ NWE L 21-28
2015-09-20 PIT vs. SFO W 43-18
2015-11-08 PIT vs. OAK W 38-35
2015-11-15 PIT vs. CLE W 30-9
2015-11-29 PIT @ SEA L 30-39
2015-12-06 PIT vs. IND W 45-10
2015-12-13 PIT @ CIN W 33-20
2015-12-20 PIT vs. DEN W 34-27
2015-12-27 PIT @ BAL L 17-20
2016-01-03 PIT @ CLE W 28-12
2016-09-12 PIT @ WAS W 38-16
2016-09-18 PIT vs. CIN W 24-16
2016-09-25 PIT @ PHI L 3-34
9-7 record, average score 26.6-22.5
In the regular season games with both Ben & Bell, they went 40-17 with an average score of 25.7-20.7.
(I put this together with data from
here and
here.)