12.4.3 Can you answer these questions?

12.4.3.1 Trying to get 2-loop amplitude/form factor in GLI format using ApartFF and FCLoopTensorReduce

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=318496

As the title suggests, I have a two-loop diagram illustrated in the given image. 
I generated this diagram using InsertFields and the corresponding amplitude with FCFAConvert. I then ran ... 
[physics] [feyncalc] [wolfram-physics]
 

asked by mashedpotatoes https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=80338 Score of 1

12.4.3.2 Error with series of spherical bessel SphericalBessel?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=318504

Below seems like some error in the spherical bessel series expansion around an arbitrary number a. All terms below should be equal. Except term1 is different from all the others! 
... 
[special-functions] [series-expansion]
 

asked by Art Gower https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=8863 Score of 2