Question: Are David Zennie and Norman McLaren both animators?

Context articles: Synchromy
Narcissus (1983 film)
McLaren's Negatives
David Zennie
Maurice Blackburn (composer)
Norman McLaren
Robert Verrall
Hen Hop
Neighbours (1952 film)
Blinkity Blank

Synchromy (French: Synchromie) is a 1971 National Film Board of Canada visual music film by Norman McLaren utilizing graphical sound.
 To produce the film's musical soundtrack, McLaren photographed rectangular cards with lines on them.
 He arranged these shapes in sequences on the analog optical sound track to produce notes and chords.
 He then reproduced the sequence of shapes, colorized, in the image portion of the film, so that audiences see the shapes that they are also hearing, as sound.
Narcissus is a 1983 Canadian short musical and experimental film directed by Norman McLaren and produced by David Verrall, visualizing the legend of Narcissus in a modern way.
 It was produced for the National Film Board of Canada.
McLaren's Negatives is a 2006 short animated documentary directed by French Canadian filmmaker Marie-Josée Saint-Pierre.
 The film is a study of the Canadian animator Norman McLaren, and his personal view of film making.
 The short film won several awards, including the 2007 Jutra Award for best animated short film.
David Zennie (born May 3, 1988) is an award winning director and Producer best known for his creative storytelling and cinematic shooting style as well as his acclaimed music video work with international artists such as Yo Yo Honey Singh,and Mohammed Assaf.
 He currently splits his time between Los Angeles, California and Dubai, U.A.E.
Joseph Albert Maurice Blackburn (22 May 1914 in Quebec City – 29 March 1988 in Montreal) was a Canadian composer, conductor, sound editor for film, builder of string instruments, and musical adviser.
 A graduate of the Université Laval and the New England Conservatory, he won the George Allan Prize in 1940.
 From 1942-1978 he worked as a film composer for the National Film Board of Canada, where he was a frequent collaborator of Norman McLaren.
 Together they developed techniques for etching sound and image directly on film.
 Blackburn composed the music for McLaren's animation film "Blinkity Blank" (1954) which won 12 prizes, including the Short Film Palme d'Or at the Cannes Film Festival.
 In 1983 he was awarded the Albert-Tessier Prize by the Quebec government.
 Science Fiction writer Esther Rochon is his daughter.
Norman McLaren, {'1': ", '2': ", '3': ", '4': "} (11 April 1914 – 27 January 1987) was a Scottish/Canadian animator, director and producer known for his work for the National Film Board of Canada (NFB).
 He was a pioneer in a number of areas of animation and filmmaking, including hand-drawn animation, drawn-on-film animation, visual music, abstract film, pixilation and graphical sound.
Robert Verrall (born January 13, 1928 in Toronto, Ontario) is a Canadian animator, director, film producer and administrator who worked with the National Film Board of Canada (NFB) from 1945 until the 1980s.
 One of the first to join the NFB's fledgling animation unit, under Norman McLaren, Verrall would work as animator on such notable NFB animated shorts as "The Romance of Transportation in Canada" and produce such shorts as "Cosmic Zoom", "Hot Stuff" as well as the Academy Award-nominees "The Drag" and "What on Earth!
".
 His NFB animation credits as executive producer included "The Family That Dwelt Apart" and "Evolution", also Oscar nominees.
Hen Hop is a 1942 drawn-on-film animation short by Norman McLaren, in which a hen gradually breaks apart into an abstract movement of lines as it dances to a barn dance.
 One of a number of drawn-on-film animated works created by McLaren, "Hen Hop" was animated by inking and scraping film stock, with colour added optically afterwards.
Neighbours (French title: Voisins) is a 1952 anti-war film by Scottish-Canadian filmmaker Norman McLaren.
 Produced at the National Film Board of Canada in Montreal, the film uses the technique known as pixilation, an animation technique using live actors as stop-motion objects.
 McLaren created the soundtrack of the film by scratching the edge of the film, creating various blobs, lines, and triangles which the projector read as sound.
 Pablo Picasso called this the greatest film ever made.
Blinkity Blank is a 1955 animated short film by Norman McLaren, engraved directly onto black film leader, "Blinkity Blank" features a soundtrack combining improvisational jazz from composer Maurice Blackburn along with graphical sounds created by McLaren scratching onto the film's optical soundtrack.