See EU 1321/2014 - Annex II & 2015/1008
145A.35(d), AMC145A.35(d)
This defines what is continuation Training
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The method of training is intended to be a flexible process and could, for example, include a Part-147 continuation training course, aeronautical college courses, internal short duration courses, seminars, etc.
The elements, general content and length of such training should be specified in the maintenance organisation exposition unless such training is undertaken by an organisation approved under Part 147 when such details may be specified under the approval and cross referenced in the maintenance organisation exposition.
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Don't get to hung up on 147 involvement as it all falls under the 145 and should be listed in the MOE