processing highland stream chunks using async

I'm using highland.js to process a file using a stream to read the contents between two delimiters. I'm also using async.js to run a series of http requests in sequence.

Ideally I would like to pass the output x from highland as the first function to the async series (chain) so that the HTTP requests get executed for each chunk extracted from the stream.

Is this possible? If so, how can this be achieved?

``` javascript
var async = require('async');
var _ = require('highland');

_(fs.createReadStream(files[0], { encoding: 'utf8' }))
.splitBy('-----BEGIN-----\n')
.splitBy('\n-----END-----\n')
.filter(chunk => chunk !== '')
.each(function (x) {
}).done(function () {

async.series([
function(callback) {
setTimeout(function() {
console.log('Task 1');
callback(null, 1);
}, 300);
},
function(callback) {
setTimeout(function() {
console.log('Task 2');
callback(null, 2);
}, 200);
},
], function(error, results) {
console.log(results);
});

});;
```

Start with the Highland stream chain and the async.series example shown in the issue. Determine whether the requested per-chunk sequencing is supported by the existing APIs; the payload names no repository files or tests, so completion would require defining the expected behavior before implementation or documentation.

Written by the indexing model from the issue text.