diff --git a/src/index.ts b/src/index.ts
index e7ba0d7d..3f7212bd 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -529,7 +529,9 @@ export default class TRAPIQueryHandler {
     const pathfinderHandler = new PathfinderQueryHandler(this.logs, this.queryGraph, this);
     const pathfinderResponse = await pathfinderHandler.query();
 
-    this.getResponse = () => pathfinderResponse;
+    if (pathfinderResponse) {
+        this.getResponse = () => pathfinderResponse;
+    }
   }
 
   async _handleInferredEdges(): Promise<void> {
@@ -625,7 +627,7 @@ export default class TRAPIQueryHandler {
         'INFO',
         null,
         `Execution Summary: (${KGNodes}) nodes / (${kgEdges}) edges / (${results}) results; (${resultQueries}/${queries}) queries${cached ? ` (${cached} cached qEdges)` : ''
-        } returned results from(${sources.length}) unique API${sources.length === 1 ? 's' : ''}`,
+        } returned results from(${sources.length}) unique API ${sources.length === 1 ? 's' : ''}`,
       ).getLog(),
       new LogEntry('INFO', null, `APIs: ${sources.join(', ')} `).getLog(),
     ];
diff --git a/src/inferred_mode/inferred_mode.ts b/src/inferred_mode/inferred_mode.ts
index bddd3d38..81ddc655 100644
--- a/src/inferred_mode/inferred_mode.ts
+++ b/src/inferred_mode/inferred_mode.ts
@@ -645,7 +645,9 @@ export default class InferredQueryHandler {
         .getSummaryLog(response, response.logs as StampedLog[], resultQueries)
         .forEach((log) => response.logs.push(log));
     }
-    response.logs = (response.logs as StampedLog[]).map((log) => log.toJSON());
+    if (!this.pathfinder) {
+        response.logs = (response.logs as StampedLog[]).map((log) => log.toJSON());
+    }
 
     return response;
   }
diff --git a/src/inferred_mode/pathfinder.ts b/src/inferred_mode/pathfinder.ts
index 3d8cc815..17a92a7c 100644
--- a/src/inferred_mode/pathfinder.ts
+++ b/src/inferred_mode/pathfinder.ts
@@ -2,7 +2,7 @@ import TRAPIQueryHandler, { QueryHandlerOptions } from '../index';
 import { TrapiResponse, TrapiQEdge, TrapiResult, TrapiQueryGraph, TrapiQNode, TrapiAnalysis } from '../types';
 import InferredQueryHandler from './inferred_mode';
 import { scaled_sigmoid, inverse_scaled_sigmoid } from '../results_assembly/score';
-import { LogEntry, StampedLog } from '@biothings-explorer/utils';
+import { LogEntry, StampedLog, Telemetry } from '@biothings-explorer/utils';
 import Debug from 'debug';
 const debug = Debug('bte:biothings-explorer-trapi:pathfinder');
 
@@ -97,10 +97,15 @@ export default class PathfinderQueryHandler {
 
     this.parse(creativeResponse);
 
+    // logs
+    creativeResponse.logs = this.logs.map(log => log.toJSON());
+
     return creativeResponse;
   }
 
   parse(creativeResponse: TrapiResponse) {
+    const span = Telemetry.startSpan({ description: 'pathfinderParse' });
+
     this.originalAnalyses = (creativeResponse as any).original_analyses;
     delete (creativeResponse as any).original_analyses;
 
@@ -134,7 +139,7 @@ export default class PathfinderQueryHandler {
       }
     }
 
-    const message1 = '[Pathfinder]: Performing serach for intermediate nodes.';
+    const message1 = '[Pathfinder]: Performing search for intermediate nodes.';
     debug(message1);
     this.logs.push(new LogEntry('INFO', null, message1).getLog());
 
@@ -153,10 +158,14 @@ export default class PathfinderQueryHandler {
     debug(message2);
     this.logs.push(new LogEntry('INFO', null, message2).getLog());
 
+    span.finish();
+
     return creativeResponse;
   }
 
   _searchForIntermediates(creativeResponse: TrapiResponse, dfsNodes: DfsGraph, supportGraphsPerNode: { [node: string]: Set<string> }, kgSrc: string, kgDst: string, kgEdge: string): ResultAuxObject {
+    const span = Telemetry.startSpan({ description: 'pathfinderIntermediateSearch' });
+
     // perform dfs
     const stack = [{ node: kgSrc, path: [kgSrc] }];
     const newResultObject: ResultObject = {};
@@ -256,6 +265,8 @@ export default class PathfinderQueryHandler {
       }
     }
 
+    span.finish();
+
     return { results: newResultObject, graphs: newAuxGraphs };
   }
 }
\ No newline at end of file