I then asked him to identify another US Bond Index that would be better than FXNAX (preferred Boglehead 3 fund bond holding). There wasn't much to offer that did better, given where bonds have been lately. However, he did pull up FTHRX (Fidelity® Intermediate Bond Fund) as doing marginally better than my current FXNAX (Fidelity® U.S. Bond Index Fund). Of course I did nothing but take notes, I make no changes until I thoroughly understand things. So I have a few questions for the sharp minded Bogleheads here.

I wish I could put a chart in this post, but I don't know how. So this is what I see:
- They are both Intermediate Core Bond
They are both no transaction fee
They are both the same low risk level (important to me)
Morning Star overall rating for FTHRX is 5 stars, FXNAX is 3 stars,
Returns are high for FTHRX, FXNAX returns are average
Expenses are below average for FTHRX (expense ratio is .44%), low for FXNAX (.025%)
TIA for all your insight!