Commercial Fixed Wing
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Communication Breakdown
ATC Issue All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Ground Incursion Taxiway
Air Traffic Control Provided Assistance; Flight Crew Became Reoriented
Human Factors
On taxi out; Ramp told us to do a 180 and go to Spot X. After the turn; Ramp told us to follow Aircraft Y to 15L and monitor Metering. So we did until Aircraft Y continued past 15L. So we stopped and contacted Metering; who switched us to Ground who gave us further taxi instructions and a phone number to call after landing. Upon completion of the flight I called the number and the Controller said they have been having repeated events of flights taxing out without clearance and asked us what happened. I repeated the above. He thanked me and advised that there were no conflicts.
Air carrier Captain reported a possible taxi deviation.