The break even point for SS age claims, which is when the dollar value of claiming benefits at a later age surpasses the value of taking them earlier, comes at roughly 78 years, 8 months, regardless of which age between 62-70 one first files their claim. If you live past 78/8, it will benefit you to have waited.
Delaying past 70 makes no sense, since maximum benefits are attained at 70.
The difference between 62 and 70 is 8 years = 96 months. The difference between 67 and 70 = 36 months.
Don't know where your advisor came up with the difference between 67-70 being 100 months. If you file at 70 and live to 85, that's 180 months of payout. If you file at 67 and live to 85, that's 216 months of payout.
I claimed at 65. DH delayed his benefits until age 70, a few months from now (and from age 66 forward he received a spousal benefit of 50% of my SS, so we've gotten 150% of my benefits for four years). As
@Georgiagranny and
@Della pointed out, surviving spouses receive the higher of the two benefits; while both alive we'll receive both his and mine.
True, we've worked longer than many (semi-retired at 64 and consulting ever since), but the work hasn't been overly difficult or stressful and is often enjoyable. Between our income and my SS, our retirement accounts remained intact.
We're bthe roughly 70 and our current life expectancy is 86/6 for me and 84/3 for him.
https://coolconversion.com/heath/life-expectancy-calculator-us/Life-expectancy-at-age_70_in-US_w
All four of our parents lived into their 90s. DH & I are in good health with no chronic or other medical conditions, so chances are quite good that one or both of us will receive the larger monthly check from his delayed filing until at least the break even point.