I do think that Revan and Jedi Exile have a subtle force bond. Revan's connection to Jedi Exile lead to Jedi Exile's force connection to be healed and Jedi Exile's force connection lead Revan to be redeemed.
Due to the nature of Jedi Shadow and their information gathering nature, Revan and Kreia were Jedi Shadows during their Jedi careers and when Revan became a Sith, he became a Sith Assassin Master and Kreia became a Sith Sorcerer. Revan while his memories were returning, became similar to a Jedi Shadow within Kotor 1 because he was looking for location of the Star forge and assassinate Darth Malak
Revan during Kotor 1 taris, was using a passive force cloak, force bonding and dark side inspired poison immunity(he is immune to the Raghoul mutation effect of the plague and use the force pass that on to his team)