Zambia forced hosts Congo Brazaville to a 1-1 draw in the reverse fixture of their group E 2017 Africa Cup of Nations qualifier on Sunday.
Jordan Massengo put Congo ahead in the 47th minute.
But in the 72nd minute, Winston Kalengo drew Zambia level.
In their first meeting on Thursday, the game also ended 1-1.
With the draw, Congo are second on six points while Zambia, who also have six points, are third due to goal difference.
Meanwhile, Guinea-Bissau went top of group E on seven points after beating Kenya 1-0 away.