Multiple RESTDataSource response

Help
1

I have 2 classes that extends RESTDataSource to consume differente API services. And I want to join the information of each other. Below I have index.ts:

(async (typeDefs: any, resolvers: any) => {
  const app = express()
  const httpServer = http.createServer(app)
  const server = new ApolloServer({
    typeDefs,
    resolvers,
    csrfPrevention: true,
    cache: 'bounded',
    plugins: [ApolloServerPluginDrainHttpServer({ httpServer }),],
    dataSources: () => {
      return  {
        icpAPI: new IcpAPI(),
        agendamentoAPI: new AgendamentoAPI()
      }
    },
  });

  await server.start()

  server.applyMiddleware({ app })
  await new Promise<void>((resolve) => httpServer.listen({ port: PORT }, resolve))

})(Schema, Resolvers)

Schema Index.ts

import { gql } from 'apollo-server-express'
import ItemPedidoEcommerce from './item-pedido-ecommerce'
import Parceiro from './parceiro'
import Agendamento from './agendamento'
import Pedido from './pedido'
import Vendedor from './vendedor'
import Status from './status'

const Schema = gql`

  ${ItemPedidoEcommerce}

  ${Pedido}

  ${Status}

  ${Agendamento}

  ${Parceiro}

  ${Vendedor}

  extend type Parceiro {
    vendedor: Vendedor
  }

  extend type Pedido {
    status: Status,
    parceiro: Parceiro
  }

  extend type ItemPedidoEcommerce {
    pedido: Pedido,
    agendamento: Agendamento,
    parceiro: Parceiro,
  }

  type Query {
    pedidoGARECommerce(id: String): ItemPedidoEcommerce
    pedidoGAR(id: Int): Pedido
    agendamento(id: Int): Agendamento
    codRev(id: Int): Parceiro
  }
`

export default Schema

how could I do that?