Fire Emblem Awakening: Do paired units proc "to all allies" abilities with their mate?
Solution 1:
Firstly, recovery skills like these don't activate if the unit is acting as a support unit. The unit has to be in the front.
In FE, "nearby allies" in skill descriptions mean "same-team units in other tiles". The character with Bond will not receive the heal, and neither will their paired up partner. Other nearby units, paired up or not, will be healed. Basically the same as the Rally skills.
This detail is probably a leftover from how the Rescue mechanic worked in earlier titles. It feels intuitive as an FE veteran.