Laura1982, I think you're right about that. Before CG I would lose hairs throughout the day but now the products hold it in and it all comes out in the shower. If you're not seeing thinner hair it's most likely normal shedding that can't escape
On the issue of massaging I can say from experience that I did not wash well when I used shampoo because I thought the suds would do the job. I would often end up with a smelly scalp within 24 hours. Since going CG and learning to massage properly my scalp feels (and smells) much cleaner. I massage about the same amount regardless of whether I'm co-washing or low-pooing.