Beyond that, Bishop Jerome is listed as an official concelebrant here: http://www.oca.org/news/1735
The relevant text reads: “Hierarchs from North American jurisdictions taking part in the Enthronement included His Eminence, Metropolitan Christopher of the Serbian Orthodox Mid-western Diocese, His Eminence, Archbishop Nicolae of the Romanian Orthodox Archdiocese in America and Canada, His Grace, Bishop Thomas of the Antiochian Orthodox Christian Archdiocese of North America and His Grace, Bishop Jerome of the Russian Orthodox Church Outside of Russia.”

Also, it should be noted after Theophilus Pashkovsky reunited with the ROCOR in the ’30s, the local ROCOR and Metropolia bishops became part of one synod, and Theophilus himself did not function autonomously, but asked permission from the synod in Karlovtsy to do things like consecrate bishops and give clergy awards.

Most of this can be found in Serafim Surrency’s book, which used to be very hard to find, but I believe may have been reprinted.

There have also been unconfirmed comments that Bp Jerome participated in services with OCA bishops. It’s unclear whether this was a Liturgy, an ordination, a consecration, or whether it happened at all. Hopefully, someone (maybe even His Grace) may be able to confirm this one way or the other – though it’s a moot point, now. Heck, praying together in the altar was a big step for ROCOR and OCA bishops given ROCOR’s stance on prayer with heretics, schismatics, etc., and this went rather unnoticed.

However, on May 5, 1922, a tri-lateral decree (O 347) from Patriarch Tikhon, the Holy Synod, and the Higher Church Council in Moscow was issued, ordering the
disbandment of ROCOR as the “Higher Church Authority” authorized in Ukaze 362. All ROCOR parishes in Europe were to be placed under Met. Evlogy directly as he was the only bishop in Europe that was on the canonical territory of his own diocese – the other bishops of the HCA (ROCOR) were all bishops of dioceses in Russia, which they were
unable to occupy at the time due to the Soviet occupation of those places. Archbishop Nikon (Rklitskii), in his series of books on the life of Metropolitan Anthony (Khrapovitsky), the first First Hierarch of ROCOR, records a letter from Metropolitan Evlogy to Metropolitan Anthony
which states: “Regarding this document, I do not recognize any mandatory power, even
though it was definitely written and signed by the Patriarch. The document has a political
character, not an ecclesiastical one. Outside the Soviet government, it does not have
meaning for anyone, anywhere.” (See Kostur, pp. 30-1)

Later, in 1927 Evlogy broke with the ROCOR (along with Metr. Platon (Rozhdestvensky) of New York, leader of the Russian Metropolia in America) and was subsequently condemned by them, splitting the Russian émigré community in Western Europe.

The primary point stands that Mets. Evlogy and Platon were bishops resident in their own dioceses rather than as emigre bishops. Regardless of the canons and the wisdom involved, the 1922 tri-lateral decree seems
to be the beginning of church chaos abroad, causing confusion among the hierarchy, clergy and laity, both emigres and past immigrants living in Western Europe and North America. (Again, see Kostur for more).