The mechanism of construction of the dividing character between the logotypes is created as 1/2 the width of the "I" character of the logotype crossed at 45 degrees.
This construction is valid for your own communication, as long as the character placed in the partner visual follows its rules.
The size of the partner logo must have the same weight and optical balance, not just geometric alignment.
One height from the "O" of the Logotype is only the minimum space between the logos.
The size of the partner logo must have the same weight and optical balance, not just geometric alignment.
Two height from the "O" of the Logotype is only the minimum space between the logos.
It is not possible to precisely define the size of a partner logo, because it always depends on balancing the weight of the partner's logo with ours, so that both create the same weight and optical balance, not just geometric alignment.