These two shims allow you to split the UIScrollViewDelegate calls from the collection and table view delegate calls.

CollectionViewDelegateSplitter.swift

//
//  CollectionViewDelegateSplitter.swift
//
//  Created by Joshua Sullivan on 12/7/17.
//

import UIKit

class CollectionViewDelegateSplitter: NSObject, UICollectionViewDelegate {
    /// The object which will receive collection-related delegate actions.
    weak var collectionDelegate: UICollectionViewDelegate?
    
    /// The object which will receive scrolling-related delegate actions.
    weak var scrollDelegate: UIScrollViewDelegate?
    
    // MARK: - UICollectionViewDelegate
    
    override func responds(to aSelector: Selector!) -> Bool {
        if let del = collectionDelegate, del.responds(to: aSelector) {
            return true
        }
        if let del = scrollDelegate, del.responds(to: aSelector) {
            return true
        }
        return false
    }
    
    override func forwardingTarget(for aSelector: Selector!) -> Any? {
        let desc = aSelector.description.lowercased()
        if desc.contains("scroll") {
            if
                let del = scrollDelegate,
                del.responds(to: aSelector)
            {
                return del
            }
        } else if desc.contains("collection") {
            if
                let del = collectionDelegate,
                del.responds(to: aSelector)
            {
                return del
            }
        }
        return nil
    }
}

TableViewDelegateSplitter.swift

//
//  TableViewDelegateSplitter.swift
//
//  Created by Joshua Sullivan on 12/8/17.
//

import UIKit

class TableViewDelegateSplitter: NSObject, UITableViewDelegate {
    /// The object which will receive table-related delegate actions.
    weak var tableDelegate: UITableViewDelegate?
    
    /// The object which will receive scrolling-related delegate actions.
    weak var scrollDelegate: UIScrollViewDelegate?
    
    // MARK: - UICollectionViewDelegate
    
    override func responds(to aSelector: Selector!) -> Bool {
        if let del = tableDelegate, del.responds(to: aSelector) {
            return true
        }
        if let del = scrollDelegate, del.responds(to: aSelector) {
            return true
        }
        return false
    }
    
    override func forwardingTarget(for aSelector: Selector!) -> Any? {
        let desc = aSelector.description.lowercased()
        if desc.contains("scroll") {
            if
                let del = scrollDelegate,
                del.responds(to: aSelector)
            {
                return del
            }
        } else if desc.contains("tables") {
            if
                let del = tableDelegate,
                del.responds(to: aSelector)
            {
                return del
            }
        }
        return nil
    }
}