If your ride has power and there are no stops and your FTP is the same then training load in Intervals.icu should match TSS elsewhere. There are differences if your ride has stops. Intervals.icu only counts moving time (if available) towards TSS which is different to TP (I have been told anyway). Otherwise sitting around having coffee can make your TSS go up!
For HR only activities Intervals.icu has several models. The default is HRSS (normalised TRIMP) from Elevate. I am not sure how comparable this is whatever TP uses. You can look at rides with power and HR to see what the HR only number would have been.
That activity is tagged as a race so its in red. Rather you than me riding for 32 hrs!