Complex sentence: Until 6 November 1995, TWE, Inc., a wholly-owned subsidiary of TWA, operated flights under the Trans World Express banner; after that date, all TWE operations were outsourced to third-party airlines.
Split into simpler sentences: Until 6 November 1995, TWE, Inc., a wholly-owned subsidiary of TWA, operated flights under the Trans World Express banner. After that date, all TWE operations were outsourced to third-party airlines.