Iterate through the CR Prompt List node and the CR Load Image List node ?

[CatDroid]

Using both the CR Prompt List node and the CR Load Image List node, the output from the CR Load Image List node is connected to the positive input of the Eff.Loader SDXL node, and the output from the CR Load Image List node is connected to ControlNet and then to the cnet_stack input of the Eff.Loader SDXL node. Upon running, it was found that it didn't iterate through all the images and prompts, but only took the first prompt from the CR Prompt List node.

[CatDroid]

What methods does ComfyUI have to iterate over each suggestion word (e.g., M words) and each reference image (e.g., N images) to obtain M*N generated images?

[CatDroid]

class CR_LoadImageList:
         ...
        images = torch.cat(image_list, dim=0)
        images_out = [images[i:i + 1, ...] for i in range(images.shape[0])]

        return (images_out, show_help, )

why torch.cat and then un-pack to images_out ? from list( tensor[1,C, H, W]), to tensor[N, C, H, W] to list( tensor[C, H, W]) ?