Very hard to separate Montana from the Bill Walsh "west coast' offense system. Harder to do that even than separate his value from the quality of his receivers.
1979 was Walsh's first year as coach of the Niners. Montana barely played in the 1979 season. He threw 270 passes in 1980. And clearly he became a star in 1981.
If drafted by the Bears, would he even have started as a rookie? Probably not. Isn't Vince Evans already the QB being groomed. Then if the Bears go 10-6 in 1979 to match IOTL (assuming all else stays about the same with the team), is he going to start in 1980 over a QB who took them to the playoffs or the already groomed Evans? Probably not again.
Montana's best chance to be the starting QB isn't until Ditka takes over as coach in 1982. The Bears, again assuming their defense stays really good to amazing through the "Montana" era, would have great chances to reach the SuperBowl each year from 1984 through 1988 and again in 1990 and 1991.
Again, though, in 1978, Phipps had a 2-10 TD/Int ratio. In 1979, Montana easily bumps Avellini off the roster - and so, his chance to shine may come (and start) will come that year.
He goes 6-9 for 63 yards and a TD in relief of Evans in game 4.
His first start is Game six, against the Buffalo Bills.
In @, Avellini goes 4-for-8, 22 yards passing in a 7-0 win.
In TTL, Montana goes 9-for-14, with 116 yards passing and a touchdown in a 14-0 win (TD pass to Latta).
Second start: Game 7, against New England:
In @ Avellini and Phipps combined to go 8-for-15, 144 yards and a TD, Bears lost 27-7.
In TTL, Montana goes 17-for-26, 209 yards, two TDs, and an interception. Bears lose 27-21.
Third start: Game 8, against Minnesota:
In @, Payton, Phipps,and Avellini combined to go 16-for-30 for 302 yards, 2 TDs, and 3 INTs in a 30-27 loss.
In TTL, Montana goes 19-for-29 for 271 yards, 2 TDs, one interception, and the Bears win a 34-30 game. It is also Montana's first 4th quarter comeback in the NFL, as the Bears get the winning TD on a swing pass to Payton with 53 seconds left.
He relieves Phipps twice later in the season, totaling 8-for-12 for 71 yards.
Montana's three starts: 45-for-69, 5 TDs, 2 picks.
His three relief appearances: 14-for-21, 1 TD.
Total: 59-for-90, 767 yards, 6 TDs, 2 int.
In 1980, he and Evans are clearly competing for the top spot. Evans has been groomed, but Montana's already flashing signs that he could be brilliant.
The Bears, feeling secure at quarterback, then trade Phipps to the St. Louis Cardinals for a 1981 2nd-round pick, a 1982 1st-round pick, and a 1983 1st and 3rd round picks.
1981 draft:
Goes like OTL, only the Bears use their pick from St. Louis to draft Cris Collinsworth.
1982 draft:
The Bears start by drafting WR Mike Quick and use the St. Louis pick to get Bubba Paris.
1983 draft:
The Bears get three first-rounders: Since they already have Paris and Van Horne at OT, they draft Bruce Matthews. They then draft RB/WR Gary Anderson (over Gault) and CB Darrell Green with the pick from St. Louis. Their third-rounder from St. Louis is traded for Atlanta's 1984 second-round pick.