Merging Two t4g.small instances into a t4g.medium

I am trying to merge two t4g.small reserved instances into a t4g.medium reserved instance. The offering class is "standard". Here is an image of my instance info: https://ibb.co/4WK3h2C
I was not sure if this was possible so I contacted 2 different AWS representatives:

Representative #1

"If you purchase another t4g.small Reserved Instance today, you should be able to combine it with your current t4g.small instance, even if they have different expiration dates. The key is that they are the same instance type and have the same normalization factor of 1. When you combine the two t4g.small instances, the new expiration date will be the later of the two original expiration dates. So if one instance expires in 6 months and the other in 12 months, the combined instance would have an expiration date 12 months from now. Now, with two t4g.small instances combined, you would be able to successfully modify that reservation to a single t4g.medium instance. The normalization factor of the two t4g.small instances (2 x 1 = 2) would match the normalization factor of the t4g.medium (2), allowing the upgrade to go through."

Representative #2

" if you merge a t4g.small instance expiring on 12/29/24 with another t4g.small instance expiring on 5/16/25, the resulting t4g.medium instance should have an expiration date of 5/16/25! Ok got it! Based on my understanding, at the time of the merge, AWS will calculate the difference between the combined upfront cost of the two t4g.small instances and the upfront cost of the new t4g.medium instance. You'll be charged (or credited) this difference. Purchase a new t4g.small Reserved Instance from the AWS console or CLI. This can be done from the "Reserved Instances" section under "EC2" service. Once you have two t4g.small Reserved Instances, go to the "Reserved Instances" section in the AWS console. Select the two t4g.small Reserved Instances you want to merge. Click on the "Actions" button at the top and select "Modify Reserved Instances". In the "Modify Reserved Instances" screen, select the option "Merge Reserved Instances". Follow the prompts to select the new Reserved Instance type (t4g.medium) and configuration you want."

Since 2 different representatives told me this can be done, I am sure there must be a way to do it but I can not figure this out. I would appreciate any help that can be offered! Thank you!

Brent