Who will he surpass with his current reign? He's just broken into the top 30 longest combined reigns and as of today (January 8th) he is at 120 days.
These are the next few combined reigns that are higher:
Eddie: 133 (Will definitely surpass)
Edge: 139 (Will definitely equal because his next defense is in 19 days)
The Miz: 160
Jinder Mahal: 170
Sheamus: 183
Seth Rollins: 221
Undertaker: 238
Yokozuna and JBL: tied at 280
Ultimate Warrior: 293
Superstar Billy Graham: 296
Kurt Angle: 297
The following 16 longest combined reigns begins in the high 300s with Diesel at 358.