Just a few minor corrections from my memory. i used to know a lot about this group, as one of their bishops is in my home town of Austin, and I used to attend there many, many years ago before they were taken in by the Milan synod.
First of all, I think the Portugese bishops were consecrated for Western Europe, and not as the "synod of Milan" proper. I think that designation came later when Bp.Evlogie formed his own synod, after the 2 Portuguese bishops moved to the Polish orthodox. When Evlogie was consecated by the Portugese bishops with the consent of Abp. Auxentios, there was an autocephaly granted by Abp. Auxentios, but it was not down with the consent of the entire Florinite synod. So, in essence Auxentios was acting alone. ( Archbishops are not popes.)
Later, Bp. Evlogie spent some time in communion with the Cyprianite GOC, and I think even co-consecrated Bp. Chrysostomos of Etna. However, this union later broke up for reasons I do not know of.
It is correct that they've been in communion with one of the autonomous Ukrainian Patriarchs, but I think that is no longer.
There have been several bishops from the Milan synod that have come and gone, again, for reasons I do not know of. Bishops John (New Jersey) and Hilarion (Austin, TX) apparently have been a stable part of the Synod. They were former New Catholics turned Old Catholics, turned "western rite Orthodox", turned Milan Synod.
I was told by the monks here that they are definitly more ecumenically interested in being involved with world Orthodoxy than the stricter Old Calendarists. I think the problem is that the other Orthodox are not interested in communion with them, as they are not recognized by anyone. (nothing new)
hope that helps.
in Christ,
nectarios
PS: I'm open to any corrections or additions on what I just wrote.