Family Flaw (2002)

A runaway coffin, a conservative wedding, an eccentric older man, two transsexuals, the police and an adorable puppy, collide on a humorous and heartwarming journey through the picturesque South of Italy. The "unexpected" death of 103 year-old Rosa creates an awkward family reunion the evening before what was to be a lush and opulent wedding. Rosa's grand-daughter, Chiara Gammarota, is set to marry the son of a wealthy general, much to the excitement of her conservative father, Nicolo. Francesco, Nicolo's "eccentric" brother caused a town scandal when he revealed his homosexuality 40 years earlier. He has returned for the wedding-turned-funeral and the two polar opposites see each other for the first time in decades. Acting on the final wishes of their mother the conflicting brothers reluctantly embark on drive through the countryside to bury their mother in their hometown; forcing them to confront family secrets...

Unfortunately the movie Family Flaw is not yet available on HBO Max.