So the first and second I reply I got was that the offers were no longer available and that they closed them. However, this is a much more promising response. The most recent reply was as following:
Dear btab,
Thank you for your interest in the Chase Sapphire bonus
points offer.
The 70,000 bonus points offer was made through a small
direct mail test and is non-transferable. The Offer Code
and Invitation Number included in the mailing can only be
applied to the recipient?s account. If you are not listed
as the addressee of the mailing, we will be unable to
apply the offer to your account. I understand you may be
disappointed and I am sincerely sorry for any confusion.
Please know that we will consider reviewing the terms of
other offers you receive in the future.
If you have any further questions, please reply using the
Secure Message Center.
Thank you,
Teresa Rodrigues
Customer Service Specialist