Any Unknown or Unlisted Aircraft Manufacturer
Flight Crew Instrument; Flight Crew Multiengine; Flight Crew Air Transport Pilot (ATP)
Flight Crew Last 90 Days 566
Distraction; Situational Awareness; Confusion
Deviation / Discrepancy - Procedural Clearance
Flight Crew Became Reoriented; Flight Crew Returned To Clearance
Human Factors
While holding short of Runway 22 at Taxiway Charlie; we received clearance to cross the runway. As we rolled past the hold short line. A Company aircraft behind us transmitted our clearance with our call sign on frequency.  As we crossed the runway; we transmitted our clearance to Ground Control. The other Company aircraft transmitted that they had taken wrong call sign's instructions adding to already congested frequency.  We taxied to the gate with no further issues.
Pilot reported confusion when company aircraft taxiing behind them; transmitted clearance to cross runway in error.