And I can tell u, Africans are no way close to West Indian blacks.
And yet I get along quite well with people from Ghana and Nigeria, who tell me that many things that I do (which I had assumed to be Caribbean in origin) are indeed West African.
And indeed I am sure that a Guyanese Indian will have an easier time getting on with a Nigerian than some one from India. For the same reason that a Guyanese blacks will get on better with some one from India than will a Jamaican.
And let me let into a secret. A group of Indo Guyanese chatting creolese will be understand by a Nigerian who listens intently. Some one from India will have no basis for understanding what language they speak, and will be shocked to think that the speakers consider themselves to be speaking a "broken" form of English.