While I don't know a lot about other teams, I can't imagine that the Bears Secondary is considered to be a top one. Their front 7, when heathy, is pretty formidable though. Nice to get back to back wins on the Road, against average to good teams.
There are 3 teams left on our schedule that I feel will be tough wins. Arizona, LA and KC.
If our secondary isn't healthy by the AZ game, we are in some serious trouble. I think they have one of the top 5 receiving groups in the NFL. We at least get the Rams at home in Late Nov. The Chiefs are beatable at home, but will be a tough W.