Ships & Modules

Let me preface this with I have no idea how these work, Im asking for a friend who is at work :p
Was in a mission with a friend training to become a Command ship pilot and fleet booster. He has all the skills to use warfare links but not the higher stuff yet.
He was in a Drake with three warfare links and two Command processors in the pocket behind me in the mission, Im in a Rattlesnake.
He activated Siege Warfare Link - Shield Harmonizing I, the one that boosts resists, once he realized that since Im running a passive fit, the other two dont do anything for me.
He turned it on, my resists didnt change. I looked at them by way of ship info and by way of the fitting screen, they both said the same thing.

When it didnt work, we started changing around the roles.
He was fleet booster, I was squad, nothing
I was fleet booster, He was squad, nothing
He was Fleet booster I was nothing, nothing
I was Fleet booster, he was nothing, nothing.

DOES it still do it even though we cant see a change?

my ship stats (Yes I know, Im massively overtanked):

[Statistics - My Ship]

Effective HP: 93,943 (Eve: 59,612)
Tank Ability: 1,469.21 DPS
Damage Profile - Minmatar Republic (EM: 21.27%, Ex: 51.51%, Ki: 19.05%, Th: 8.17%)
Shield Resists - EM: 54.50%, Ex: 82.00%, Ki: 52.00%, Th: 36.00%
Armor Resists - EM: 50.00%, Ex: 10.00%, Ki: 25.00%, Th: 45.00%

Capacitor (Stable at 58.94%)

I have leadership skills too (all 3 except siege warfare, its 4) if that matters, I cant imagine it would.

Yes, what mxsf said.

Bonuses only flow thru the fleet structure when all command positions are filled with pilots with the appropriate Squad/Wing/Fleet Command skills.

With Leadership skill you can only transfer (give) bonuses to a Squad, maximum members 10 with Leadership V. Just set the boosting pilot to Squad Commander and don't worry about the Fleet Booster setting at all, it's required only when you have a larger fleet and want a specific pilot to give boosts to specific units.

You can see a green tick in the fleet window when you are receiving bonuses, and red cross when not.

He should also be in space, in the same system you are, with the module activated