Nolan has spent time under Dan Reeves, Billick and his father, Dick Nolan, was once the 49ers and Saints' coach.
"Chicago is a blue-collar city that's passionate about sports with a great history in pro football," said Nolan, 44. "I find that intriguing. I have a great job here and I'm very happy here in Baltimore.
"At the same time, I want to look at the Bears' job. I've worked in New York. I've worked here. Chicago reminds me a lot of New York in terms of energy and passion. We'll see how it goes, but, like I said, I'm extremely happy with the job I have."
Heading into Tuesday seven teams had head-coaching vacancies, but there are reports that Tom Coughlin has accepted the Giants offer. Leaving the Bears, Arizona Cardinals, Atlanta Falcons, Buffalo Bills, Oakland Raiders and Washington Redskins still searching.
It doesn't look like Jerry Angelo will meet with Iowa's Kirk Ferentz, who seems content to stay at Iowa for the time being. His son, Brian, is a sophomore at the university and the team's center for the first six games of the year before suffering a season-ending knee injury.
Nick Saban is reportedly not happy with LSU's contract offer fresh of their National Championship victory and might still consider a jump to the NFL. He was considered one of the Giants' top choices, so the fact that they went with Coughlin two days after the college season came to an end could be an indication Saban is just trying to use the NFL as leverage for a big payday.
Bears: Jim Mora Jr. with Nick Saban being a long shot.
Arizona: Jim Fossel
Atlanta: St. Louis Rams defensive coordinator Lovie Smith.
Buffalo: Romeo Crennel
Oakland: Dennis Green
Washington: Seattle Seahawks defensive coordinator Ray Rhodes.
If Rhodes end with Washington then Dick Jauron could join Mike Holmgren as the Seahawks defensive coordinator. The two worked together in Green Bay.