This is my standard IRS spousal benefits link. You may have to click on the "How much will I receive" button to expand that section.
#1 The spouse not receiving spousal benefits must be receiving retirement benefits (or suspended benefits).
"you may be able to get spouse’s retirement benefits if you are at least 62 years of age and your spouse is receiving retirement or disability benefits."
I see no restriction that the spouse already receiving benefits must be FRA or older only that they are receiving benefits. FRA is only a problem if that spouse wants to delay benefits.
#2 The spouse applying for the spousal benefit receives a permanently reduced benefit if they start spousal benefits before their own FRA.
"between age 62 and your full retirement age, the amount will be permanently reduced by a percentage based on the number of months up to your full retirement age."
And of course the new provision: "Note: If you were born before January 2, 1954 and have already reached full retirement age, you can choose to receive only the spouse’s benefit and delay receiving your retirement benefit until a later date. If your birthday is January 2, 1954 or later, the option to take only one benefit at full retirement age no longer exists. If you file for one benefit, you will be effectively filing for all retirement or spousal benefits."