The most important part of training is what happens AFTER the training. Reality (aka science) dictates that people can only ingest and retain so much information, regardless of how well-designed a learning activity may be. Then, given the relative unpredictability of the modern workplace, employees may or may not have immediate opportunities to apply their new knowledge when they get back on the job.
Therefore, L&D strategy cannot stop at delivery. Rather, we must embed continuous learning opportunities within the employee workflow and provide just-in-time support for those who need it.