Where the two trunks are joined that is called co-dominant leaders. The dark area between them is rotting between the two trunks . This is a far greater danger. The upper tree limbs removed left huge scars the damage has healed never cover or fill . The tree can heal on it own .
The co-dominant trunks touching is a far greater danger . The trees trunks where they are touching are slowly rotting and will eventually weaken and rot out until the tree gives way and falls. There is no air or sun or space for the trunks to grow . There is no way to protect the co leader trunks touching and no possible way to heal. It will continue to rot as the tree continues to grow and becomes heavier and at higher risk for rotting and creates conditions susceptible to fungus and disease . The area will continue to be a risk of falling due to existing rot and decay until the tree is either removed or falls.
I am not a tree arborist. Call a tree specialist to analyze the tree for a closer professional evaluation.
