If a student undertakes basic training in an organisation Part 147

Applicants who complete basic training at an approved Part 147 organisation and then pass the examinations in another approved Party 147 organisation, will be granted full basic course consideration and, therefore, the reduction of the basic experience requirement will be maximum, eventually remaining within 1 or 2 years. 

The combination of Certificates of Recognition (only complete basic training + examination of modules) will be sufficient for the competent authority to recognise that the basic training course has been successfully ‘completed’. 
 
See also AMC of Appendix III to Part 147 "Certificates of recognition referred to in Annex IV (Part 147) – EASA Format 148