Complex sentence: He did more damage by saying that "there are no Kotiyas in Sri Lanka", and then misinterpreting "Panthera pardus kotiya" as "Diviya" in Sinhala.
Split into simpler sentences: He did more damage by saying that "there are no Kotiyas in Sri Lanka". And then misinterpritated "Panthera pardus kotiya" as "Diviya" in Sinhala.