Can the iPad battery benefit from skipping overnight charging

No. Charging it overnight is what provides a longer battery life as it can manage and optimize its charging and charge it slower since it has a lot of time to do so.

Charging overnight is highly recommended for battery health and lifespan.

click here ➜ Batteries - Maximizing Performance - Apple

When you charge your iPad will make no difference to how long the iPad will run from a full charge. Your iPad automatically regulates battery charging; when the battery reaches full charge, charging essentially stops - but maintains 100% charge while the Power Adapter remains connected.

When you disconnect the Power Adapter, the iPad will start to draw power from its battery - as needed.

For some additional information, see here:

When to charge your iPhone or iPad - Apple Community