Both involve a commoner and a royal of opposite genders switching bodies and then being forced to navigate each other's lives, bickering and trying to swap back.

Both are historical mini dramas in which a royal lead swaps with a commoner/bandit lead, resulting in them having to navigate each other's lives all the while bickering.

Both are historical mini dramas with a FL who is a strong general entering into an arranged marriage with a weaker, rich ML.

Both FLs fall in love with a man who betrays them and causes their death in a fire. The FLs then find themselves back in time and resolve to change their fate, which leads to them growing close to the kind ML.

Both are short BLs in which the human lead discovers his cat has transformed into a human.
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Both are BLs about the relationship between one of the leads who is human, and the other lead who is a cat/human shapeshifter who begins living with the human.

Both are BLs about the relationship between one of the leads who is human, and the other lead who is a cat(or dog)/human shapeshifter who begins living with the human.

Both are censored Chinese BLs that have a relationship between a human and a cat shifter.
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Both are censored BL stories about a human and the cat shifter he brings home.
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Both are enemies to lovers stories in a school setting where the rich bully ML falls in love with the fierce and poor FL, with his nicer childhood friend becoming part of the love triangle. One is historical and the other modern, but both have a similar plot and tone.

Both have a rich ML/poor FL romance with a SML initially uninterested but later falling in love with the FL. Both dramas have a similar vibe, settings, and plot elements.

Both are Thai BLs that involve first one and then both of the MLs time traveling into the past and changing events in their lives. At some point in both dramas, one of the MLs is hospitalized and the other ML travels to the past to try to convince him not to meet/become involved with him, in the hopes of saving his life.