I was in contact with both Ledger and Trezor a few years back regarding marketing on bitcointalk. Trezor said they'd consider it (but never looked into it further) while the ledger rep I was talking to asked what I could do with a $500/month marketing budget. lol
I was once contacted by ledger as well a few years ago, when I wrote some articles in a popular crypto magazine in Brazil. They sent me 2 new devices and gave me some ref codes, but that was it. Never paid me anything....