Complex sentence: Nevertheless, the Britannia is considered one of the landmarks in turboprop-powered airliner design and was popular with passengers, earning itself the title of "The Whispering Giant" for its quiet exterior noise and smooth flying, albeit the passenger interior remained less tranquil.
Split into simpler sentences: Nevertheless, the Britannia is considered one of the landmarks in turboprop-powered airliner design and was popular with passengers. It became known by the title of "The Whispering Giant" for its quiet exterior noise and smooth flying, albeit the passenger interior remained less tranquil.