The NCT bfc course is an externally-validated University diploma in Higher Education, which most women take three years to complete.
The course mixes practical experience, observation, written work, reading, residential course work (2 separate weekends), group skills, self-development and awareness...I could go on. Afterwards, bfcs are required to undergo regular supervision and updating.
The three day course she talks about on her blog sounds like the UNICEF lactation management course, which is something different.
No one can qualify to help breastfeeding mothers in three days.
I don't know what CBC's bf qualifications are or how she ensures her practice is supervised and updated.