In this example of connecting the the pipelines (https://kedro.readthedocs.io/en/stable/nodes_and_pipelines/modular_pipelines.html#combining-disconnected-pipelines), is

inputs={"food": "grilled_veg"}

supposed to be

outputs={"grilled_veg": "food"}

instead? Or perhaps it's the input to the

lunch_pipeline

?

prep_pipeline

is the upstream pipeline.