Complex sentence: In 1966, he appeared in a production of "Incident at Vichy" at the Phoenix Theatre in London; and in 1967, he played Porthos in a 10-part BBC adaptation of "The Three Musketeers".
Split into simpler sentences: In 1966, he appeared in a production of "Incident at Vichy" at the Phoenix Theatre in London. In 1967, he played Porthos in a 10-part BBC adaptation of "The Three Musketeers".