GND HANDLING IS COMPLICATED AT MEM DURING THE LATE NIGHT HIGH TFC HRS.

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LANDED RWY 36L; EXITED AT M6. CALLED MEM GND AND WAS DIRECTED TO PROCEED VIA TXWY N; HOLD SHORT OF RWY 27. WHEN ABEAM OF THE FBO BUILDINGS; MEM GND TOLD US TO GIVE WAY TO A HVY ACFT Y THAT WOULD BE XING RWY 27 AT INTXN C. I SPOTTED THE HVY AT TXWY A AND INTXN C; JUST ABOUT TO CROSS RWY 27 AT INTXN C. THIS ACFT DIDN'T APPEAR TO BE IN A POS OF POTENTIAL CONFLICT WITH US. A SHORT TIME LATER; AS WE APCHED TXWY A MEM GND TOLD US TO CROSS RWY 27 AND GIVE WAY TO A BOEING ACFT Z; FOLLOWING THE PREVIOUSLY IDENTED HVY XING RWY 27 AT INTXN C. AGAIN; THIS SECOND ACFT DIDN'T APPEAR TO BE IN A POS OF POTENTIAL CONFLICT WITH US. WE STARTED TO CROSS RWY 27 AND TXWY N. THEN I SAW A BOEING ACFT W TURNING IN FRONT OF US FROM TXWY N ONTO TXWY Z; PERPENDICULAR TO MY LINE OF SIGHT. THIS BOEING WOULD HAVE HAD MORE OF A POTENTIAL TAXI CONFLICT WITH THE 2 PREVIOUS GND TAXI CALLS THAN US. UP UNTIL THIS TIME (TURNING PERPENDICULAR TO OUR LINE OF SIGHT); I HAD NOT NOTICED THIS BOEING. AS WE CLRED RWY 27 AND APCHED THE TURN ONTO TXWY Z; I GLANCED OUT BACK OF MY WINDOW AND SAW A DC10/MD11 ACFT V TOUCHDOWN ON RWY 9. MEM GND ASKED US OUR LOCATION. I RESPONDED 'JUST TURNING OFF OF TXWY N ONTO TXWY Z.' NOTHING ELSE FROM MEM GND. IT WAS THE TONE AND WAY MEM GND ASKED FOR OUR LOCATION WHICH MAKES ME FEEL WHEN HE CLRED 'ACFT X CROSS RWY 27;' THAT HE WAS REFERRING TO THE BOEING ACFT W IN FRONT OF US AND HE WAS SURPRISED WHEN OUR ACFT DID IN FACT CROSS RWY 27. I QUESTIONED THE OTHER CREW MEMBERS AND THEY HEARD OUR CLRNC TO CROSS RWY 27 ALONG WITH THE 'GIVE WAY TO' CALLS FROM GND CTL. IN SHORT; I FEEL GND THOUGHT WE (ACFT X) WERE THE OTHER BOEING ACFT W IN FRONT OF US ON TXWY N.