Get-OSCustomizationSpec - From connection to linked vCenter Servers

I have 2 vCenter servers vcA & vcB in linked mode and I connect like below...

Connect-VIServer -Server "vcA.labcloud.net" -AllLinked

I get the expected output of all the customization specs from both vCenter servers like below...

win2016x64_a

win2012r2_b

win2019_gui_b

win2016x64_a

win10x64pro_b

win2012r2_a

win2019_gui_a

win2008r2_a

Naturally "a" means it's a customizationspec from vcA and the "b" is a customization from vcB.

Is it possible to get the output to have the first column have the vcenter server name that the customization spec is from like below in a CSV?

vcA,win2016x64_a

vcB,win2012r2_b

vcB,win2019_gui_b

vcA,win2016x64_a

vcB,win10x64pro_b

vcA,win2012r2_a

vcA,win2019_gui_a

vcA,win2008r2_a

I know the a & b visually you can see what vcenter it belongs to but I want to put it in a SQL table for something else and the vcenter name column is needed for the where clause.

Thanks