They claim to have studied HCQ: "The WHO’s trial previously involved fewer countries and determined that remdesivir, hydroxychloroquine, lopinavir and interferon had “little or no effect” on hospitalized COVID-19 patients."
Of course, around here we knew that back in April 2020. HCQ was helpful when given at first onset of symptoms (with zinc and one other thing that escapes me right now) and was useless when symptoms had already become severe enough for hospitalization
The third ingredient in that cocktail was an antibiotic azithromycin