If I where to put an egg between two Pokemon with flame body or magma armor would it hatch faster than if I where to put it beside one?
>In Pokémon Emerald and all subsequent games, it also halves the number of cycles it takes for an Egg to hatch. Both the Pokémon with Flame Body and the Egg must be in the party in order for this to work. Magma Armor also has a similar effect. However, this effect will not stack up if multiple Pokémon with Flame Body and Magma Armor are in the party.
So, no it would no work. Having two Pokemon with flame body/magma armor would be the same as having one. Sources: http://bulbapedia.bulbagarden.net/wiki/Flame_Body http://pokemondb.net/pokebase/117245/have-three-pokemon-with-flame-body-how-long-will-take-hatch-egg