As endlessness has mentioned, data pertaining to drug interactions with RIMAs relates to oral use; smoked/vaporised RIMAs such as extracted harmalas have not been formally tested in conjunction with any oral meds (AFAIK) so any reports will be anecdotal.But, with caution being the better part of valour, its wise to err on the side of caution.
The datasheet for methyphenidate states that it should not be used with concurrent MAOIs (and no distinction is made between types A or B, reversible vs irreversible) or within 14 days of regular MAOI use as hypertensive crises may result.
I think that there is going to be differences in durations of action when oral harmalas are compared to vaporised, plus most of us here do not use harmalas on a daily basis so, with the terminal half-life of methylphenidate being about 3.5 hours, I personally would like to have a couple of days between a one-off use of methyphenidate and use of harmalas by any route.Do note that we are treading relatively unknown ground with our enthusiasm for vaporised harmalas so we must be appropriately cautious.