During at least one condition after the warm up at 204, the engine may be operated at an increased expansion across the first turbine and {HEAD ~ a decreased expansion} across {TAIL ~ the second turbine} 
across
During at least one condition after the warm up at 204 , the engine may be operated at an increased expansion across the first turbine and { HEAD ~ a decreased expansion } across { TAIL ~ the second turbine }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL