Command-given enchanted books won't combine?

I'm working on a map with a lot of command blocks, and I'm having trouble with two enchanted books that will not combine together in an anvil, nor will they with any armor or tools.
/item replace entity @p container.15 with minecraft:enchanted_book[item_name='{"text":"Additionally, you can combine enchanted books..."}',enchantments={levels:{"minecraft:unbreaking":3}}]
/item replace entity @p container.24 with minecraft:enchanted_book[item_name='{"text":"...like these..."}',enchantments={levels:{"minecraft:respiration":3}}]
I suspect it's something to do with the components, but I'm not sure.