Has Adam Gase emerged as the front-runner for the Eagles' head coaching vacancy?

The Eagles have scheduled a second interview with the Bears offensive coordinator, according to Ian Rapoport of NFL Network:

Gase met with the team's brass on Tuesday. The interview lasted approximately eight hours, sources familiar with the meeting said. Gase flew from Chicago to Philadelphia in the afternoon and left during the evening. He reportedly has interviews set up with the Browns, Dolphins and New York Giants over the next few days.

His second interview with the Eagles is scheduled for the weekend, per Rapoport.

Giants offensive coordinator Ben McAdoo is also slated to interview with the Eagles on Thursday, according to multiple reports.

The Eagles have confirmed only three interviews thus far. They met with in-house candidates Pat Shurmur and Duce Staley before sitting down with Gase. ESPN reported that the Eagles were going to interview Jaguars assisant Doug Marrone, but league sources said that wasn't the case.

The Eagles also have been linked to Buccaneers offensive coordinator Dirk Koetter and Lions defensive coordinator Teryl Austin, but the team hasn't confirmed interviews. There have also been reports that they have interest in Chiefs offensive coordinator Doug Pederson.

Pederson, the former Eagles quarterback and quarterbacks coach, works under former Eagles coach Andy Reid. Kansas City will travel to Houston to face the Texans in the first round of the playoffs on Saturday. The Eagles would need permission from the Chiefs to interview Pederson next week.

Gase, 37, has been an offensive coordinator for the last three seasons -- for two years with the Broncos and then this last season with the Bears. He doesn't come from a traditional football background, having not played in college. The same could be said of Eagles vice president of football operations Howie Roseman.

The coach-personnel head relationship is an important one in the construction of any team. If Gase and Roseman feel comfortable with one another, it could lead to a marriage.