There are a couple of issues with gaps between the baffles that I can see:
Since after insulating and drywaling the ceiling you have no access to the roof decking, no way of monitoring it, any roof leakage could seep between the panels into the insulation and onto the drywall ceiling. With overlapping panels, so the upper one is under the lower one (like a gutter), it would all drip into the soffit. By occasionally monitoring the soffits you’d be able to trace that rafter space and look for the problematic roof surface area without getting your ceiling damaged.
Gap between the panels could cause temperature differential (Owens Corning recommends spacing the insulation in that area as well) and condensation buildup that could soak the insulation, cause mold growth, and result in ceiling damage.
“The AccuVent soffit insulation baffle is made of rigid recycled plastic. It’s more durable than other foam-based products and installs quickly with staples. These baffles should still be air-sealed with spray foam,…”
“When installing the baffles, start at the ridge and work your way down, overlapping the baffles as you go. This will direct water leakage out of the cavity and into the soffit. Tell the homeowner to periodically check for signs of water leakage in the soffit.”
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