To sum up, the most plausible connection is Alexandre Frota's guest role in "Malhação: Ribeirão do Tempo" in 2011 and Marcia Impérator's hosting role in a TV show, possibly coinciding if they were both in a particular event or episode. However, a direct collaboration isn't confirmed. I should present the known facts and clarify that there might be a mix-up in names or events.
To sum up, the most plausible connection is Alexandre Frota's guest role in "Malhação: Ribeirão do Tempo" in 2011 and Marcia Impérator's hosting role in a TV show, possibly coinciding if they were both in a particular event or episode. However, a direct collaboration isn't confirmed. I should present the known facts and clarify that there might be a mix-up in names or events.