By default transaction over 100,000 vbytes in Bitcoin Core's Standardness limits...this was never intended though miners will take out of band payments to help their bottom line. 

https://bitcoin.stackexchange.com/questions/117277/what-is-the-maximum-size-transaction-that-will-be-relayed-by-bitcoin-nodes-using

nostr:npub1yx6pjypd4r7qh2gysjhvjd9l2km6hnm4amdnjyjw3467fy05rf0qfp7kza  was the one who taught me this 😊 (gotta give credit were credit is due)