One commandment with two facets or sides.

And one of them, a lawyer, asked him a question to test him. “Teacher, which is the great commandment in the Law?” And he said to him, “You shall love the Lord your God with all your heart and with all your soul and with all your mind. This is the great and first commandment. And a second is like it: You shall love your neighbor as yourself. On these two commandments depend all the Law and the Prophets.”
Matthew 22:35‭-‬40 ESV
https://bible.com/bible/59/mat.22.35-40.ESV

Thinking about the greatest commandment, I once heard Billy Graham state that it’s really one commandment with two sides or facets, much like a coin with two sides, heads and tails. You can’t have one side without the other, otherwise the coin is worthless

In the same manner, one can’t claim to love God, while not loving, even hating, his brother/neighbor (1 John 3:10-15)

So, the Great commandment is one commandment; to love. Love God with all of your heart, mind, soul and strength, and your neighbor (brother) as yourself.

You can’t truly love God, without loving your neighbor as yourself and nor can you truly love your neighbor as independent of God; not to the depth that God commands and demonstrates in Christ.