Question: Did both Frank Daniel and Willard Huyck develop advancments in screenwriting?

Context articles: Howard the Duck (film)
Willard M. Huyck
Frank Daniel
Frank D. Gilroy
Gloria Katz
Frank Gari
Willard Huyck
Messiah of Evil
French Postcards
Taxandria (film)

Howard the Duck (titled Howard: A New Breed of Hero in the UK) is a 1986 American science-fiction comedy film directed by Willard Huyck and starring Chip Zien, Lea Thompson, Jeffrey Jones, and Tim Robbins.
 Produced by Gloria Katz and written by Huyck and Katz, with George Lucas as executive producer, the screenplay was originally intended to be an animated film based on the Marvel comic book of the same name, but the film adaptation became live-action because of a contractual obligation.
 Although several TV adaptations of Marvel characters had aired during the preceding 21 years, this was the first theatrical released feature film, coming after the serial "Captain America".
Willard M. Huyck served in the California legislature and during World War II he served in the United States Army.
 His son Willard Huyck is an American screenwriter, director and producer,
František "Frank" Daniel (April 14, 1926 – March 29, 1996) was a film director, producer and screenwriter born in Kolín, Czechoslovakia (the present day Czech Republic).
 He is known for developing the sequence paradigm of screenwriting.
Frank Daniel Gilroy (October 13, 1925 – September 12, 2015) was an American playwright, screenwriter, and film producer and director.
 He received the Tony Award for Best Play and the Pulitzer Prize for Drama for his play "The Subject Was Roses" in 1965.
Gloria Katz (born October 25, 1942) is an American screenwriter and film producer, best known for her association with George Lucas.
 Along with her husband Willard Huyck, Katz has created the screenplays of films including "American Graffiti", "Indiana Jones and the Temple of Doom" and "Howard the Duck".
 Katz is of Jewish descent.
Frank Gari (born Frank Daniel Garofalo in New York City on April 1, 1944) is a singer, songwriter, and composer.
Willard Huyck (born September 8, 1945) is an American screenwriter, director and producer, best known for his association with George Lucas.
Messiah of Evil (later also shown under the title Dead People) is a 1973 American horror film co-written, co-produced, and co-directed by Willard Huyck and Gloria Katz, the husband and wife team behind the film version of "Howard the Duck" as well as the screenplays for "American Graffiti" and "Indiana Jones and the Temple of Doom".
French Postcards is a 1979 American romantic comedy film starring Miles Chapin, Blanche Baker, David Marshall Grant, Valérie Quennessen, Debra Winger, Mandy Patinkin, Marie-France Pisier and Jean Rochefort about a group of American exchange students who spend a year studying in Paris.
 Madame Catherine Tessier (Marie-France Pisier), who with her husband, Monsieur Tessier (Jean Rochefort), directs and teaches at "The Institute", takes special interest in Alex (David Marshall Grant), whose real ambition is to experience Parisian life; Madame Tessier's interest extends beyond the classroom and into her bedroom.
 Debra Winger and Mandy Patinkin co-star in this comic coming-of-age tale co-written by "American Graffiti" scripters Gloria Katz and Willard Huyck, who also directs.
Taxandria (1994) is a partially animated fantasy film by Raoul Servais, collaborating on a script with Frank Daniel and French writer Alain Robbe-Grillet, and starring, among others, Armin Mueller-Stahl.
 Being Servais's first and to date only feature film, "Taxandria" is notable for the use of Servais's distinct animation style, the "servaisgraphie", as well as its connection to the Belgian graphic novel series "Les Cités Obscures" whose creator François Schuiten was the film's production designer.