Supplier reviews should rarely happen much ahead of the work. The supplier should want to wait to ensure they're working off the latest prints/details and both the supplier and engineer should want any discussion/explanation/Q&A/sketches to be fresh in the supplier's mind while working.
IME the trades have undergone a real renaissance over the past 15-20 years and likely never been better. 30 years ago it was common to encounter tradesmen with no formal education/training, little knowledge or skill beyond what they'd seen/done locally, and a bad attitude bc the trades were (rightfully) disrespected as a fallback for those who failed in other careers. Consequently, the quality of both their work and guidance to customers sucked, professionalism was lacking, and there was real aversion to technology. Today those folks are few and far between. Most tradesmen have degrees and multiple certs and the trades are a respected career choice. Regardless if you ask a plumber or machinist, they can speak very well about modern technology and efficiency bc they live it daily, and those that cant find another career.
Engineering OTOH has hit a low-point in recent years. We're spoiled by low-cost, easy-to-use modern technology yet incompetent luddites abound and are often running engineering depts bc they were "next in line."