S3 : Put Vs Multipart Notification clarification

Question

Wanted to confirm the behavior I am seeing. I am using Amplify.Storage.uploadFile to upload a file. The file being uploaded can be of any size . Seems like the amplify sdk decides the mechanism for upload depending upon file size. I am listening to SQS notifications on upload. This is the behavior that I see

Enable only Multipart upload complete notification:

1. Smaller file size : receive nothing
2. Larger file size: receive single ObjectCreated:CompleteMultipartUpload event

Problem: I miss out on the smaller file.

Enable both PUT and Multipart upload complete notification

1. Smaller file size: receive put event
2. Larger file size : get multiple ObjectCreated:CompleteMultipartUpload events

Problem: I don’t know which of the notifications to listen to for the larger file size. I don’t know if anything is guaranteed about the timing of the multiple notification. Can I assume to try to read the file and if the multipart upload has not truly finished then I wouldn’t be able to download the file and hence I can ignore the notification ?

Thoughts ?