yes the engineer or constructor gets eaten by commanderbot instantly and replenish health and energy of commanderbot. if it has low weapon time limit and needs energy or health gets a constructor or scorcher and with one click instantly destroys it and replenish it's self. and if he needs to boost construction and has 8 scorchers he does not need he consumes them and build 2 times faster one stinger.
we all know when commanderbots are in dire situation and need to find substance to survive. give it last minute resort could save the commanderbot and turn the field of battle on one's favor ;D.