Men's attorney says many hurdles remain
Couple filed complaint with country's Human Rights Commission
Advocacy groups have urged the government to change course
Simon Lokodo passed away on Friday at a Geneva hospital
Mokgweetsi Masisi met with LGBTQ+ activists on Monday
Country's Senate expected to debate bill next month
National Assembly members described measure as 'bogus debate'
Anti-LGBTQ rights group is behind measure
'Today is a momentous day in history'
March 15 attack left gay man dead
