Thy have rapped together since the 90's.. I think both of them made their best music during the Horns and Halos days.. I know Equipto didnt get the recognition that he deseves during that time and really only andre nickatina got more fame.. But they were always featured on each others albums.. But now they dont even have any songs with each other any more since like 2007 or so.. Equipto has songs talking about San Francisco and rapping about all the San Francisco OG rappers that inspired him but he never mentions Andre Nickatina.. and in one song he says something like "People ask why i dont rap with the homie no more" i forget what he says after that or what the song name was though.. So are the beefin or what?