Prioritise shebang over file extension?

[alxndrsn]

Is it possible to prioritise hilighting in line with the shebang vs the file extension?

E.g. I would like these two files with identical content but different extensions to hilight as bash files:

Versions:

• vim 8.1
• vim-polyglot 38282d58387cff48ac203f6912c05e4c8686141b