Morkus from Orkus
Everything you regain after a long rest is a benefit of that long rest. The reason you don't see things like spells, vampire bite recovery, etc. listed in the long rest section is that they are specific benefits, not general ones, and get added to the general rule if they apply to you. Spellcasting is mentioned in the general resting section above long and short rest, though.I don’t think anyone has answered @jaelis’s question about regaining spent spell slots when taking a long rest with 0 hit points. I’d be interested to know what your answers would be.
If finishing a long rest and gaining its benefits are not the same thing, then I’m sure you’d both have no problem with my wizard taking multiple 8-hour naps throughout the day and getting all his spent spell slots back.
"Heroic though they might be, adventurers can’t spend every hour of the day in the thick o f exploration, social interaction, and combat. They need rest—time to sleep and eat, tend their wounds, refresh their minds and spirits for spellcasting, and brace themselves for further adventure.
Adventurers can take short rests in the midst of an adventuring day and a long rest to end the day."