Yeah, that was definitely more Buddy Ryan.
Ryan came to Chicago several years before Ditka, and his 46-Defense was in place when Iron-Mike was hired. As I recall, some of his defensive players wanted George Halas to name Ryan head coach but Papa-Bear went with Ditka. I believe Ditka had to retain Ryan; and mostly, left the defense to him.
Ryan was a major asshole (IMO) but that 1985 Bears' defense was one of the best I ever saw.
Hampton, McMichael and Dent on the D-Line; with Singletary, Wilson and Marshall at LB. What a front-seven! Refrigerator Perry may have been the least talented among the front-seven-starters but probably got more attention that any of them except for Singletary.